fix(download): always send User-Agent and Accept headers

When downloading files, src.fedoraproject.org now requires the Accept
header to be present. If the header is missing, it returns an HTML page
instead of the requested file, causing a checksum mismatch.

This change adds the "Accept: */*" and "User-Agent: BLDR/<version>"
headers to all HTTP downloads to prevent this issue.

This was discovered when glibc and libtirpc packages started to fail
recently in the extensions repository[1].

[1] https://github.com/siderolabs/extensions/

Signed-off-by: Gilbert Gilb's <[email protected]>
Signed-off-by: Andrey Smirnov <[email protected]>

Author: gilbsgilbs

go.mod

@@ -11,16 +11,16 @@ require (
 	github.com/containerd/platforms v1.0.0-rc.2
 	github.com/emicklei/dot v1.9.2
 	github.com/hashicorp/go-multierror v1.1.1
-	github.com/moby/buildkit v0.25.2
+	github.com/moby/buildkit v0.26.2
 	github.com/moby/docker-image-spec v1.3.1
 	github.com/opencontainers/go-digest v1.0.0
 	github.com/opencontainers/image-spec v1.1.1
 	github.com/otiai10/copy v1.14.1
 	github.com/siderolabs/gen v0.8.6
 	github.com/spf13/cobra v1.10.1
 	github.com/stretchr/testify v1.11.1
-	go.yaml.in/yaml/v4 v4.0.0-rc.2
-	golang.org/x/sync v0.17.0
+	go.yaml.in/yaml/v4 v4.0.0-rc.3
+	golang.org/x/sync v0.18.0
 )
 
 require (
@@ -66,15 +66,15 @@ require (
 	github.com/charmbracelet/x/cellbuf v0.0.13 // indirect
 	github.com/charmbracelet/x/term v0.2.1 // indirect
 	github.com/cncf/xds/go v0.0.0-20250501225837-2ac532fd4443 // indirect
-	github.com/containerd/containerd/v2 v2.1.4 // indirect
+	github.com/containerd/containerd/v2 v2.2.0 // indirect
 	github.com/containerd/errdefs v1.0.0 // indirect
 	github.com/containerd/log v0.1.0 // indirect
 	github.com/containerd/ttrpc v1.2.7 // indirect
 	github.com/containerd/typeurl/v2 v2.2.3 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/diskfs/go-diskfs v1.6.1-0.20250601133945-2af1c7ece24c // indirect
 	github.com/distribution/reference v0.6.0 // indirect
-	github.com/docker/cli v28.4.0+incompatible // indirect
+	github.com/docker/cli v28.5.0+incompatible // indirect
 	github.com/docker/docker-credential-helpers v0.9.3 // indirect
 	github.com/docker/go-connections v0.5.0 // indirect
 	github.com/docker/go-events v0.0.0-20250114142523-c867878c5e32 // indirect
@@ -88,7 +88,7 @@ require (
 	github.com/fsnotify/fsnotify v1.9.0 // indirect
 	github.com/gabriel-vasile/mimetype v1.4.9 // indirect
 	github.com/github/go-spdx/v2 v2.3.3 // indirect
-	github.com/go-jose/go-jose/v4 v4.1.1 // indirect
+	github.com/go-jose/go-jose/v4 v4.1.2 // indirect
 	github.com/go-logr/logr v1.4.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-viper/mapstructure/v2 v2.3.0 // indirect
@@ -99,7 +99,7 @@ require (
 	github.com/google/go-cmp v0.7.0 // indirect
 	github.com/google/go-containerregistry v0.20.6 // indirect
 	github.com/google/licensecheck v0.3.1 // indirect
-	github.com/google/pprof v0.0.0-20250630185457-6e76a2b096b5 // indirect
+	github.com/google/pprof v0.0.0-20250820193118-f64d9cf942d6 // indirect
 	github.com/google/s2a-go v0.1.9 // indirect
 	github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510 // indirect
 	github.com/google/uuid v1.6.0 // indirect
@@ -117,7 +117,7 @@ require (
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/jinzhu/copier v0.4.0 // indirect
 	github.com/jmespath/go-jmespath v0.4.0 // indirect
-	github.com/klauspost/compress v1.18.0 // indirect
+	github.com/klauspost/compress v1.18.1 // indirect
 	github.com/klauspost/pgzip v1.2.6 // indirect
 	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
 	github.com/mattn/go-colorable v0.1.14 // indirect
@@ -146,7 +146,7 @@ require (
 	github.com/rivo/uniseg v0.4.7 // indirect
 	github.com/sagikazarmark/locafero v0.9.0 // indirect
 	github.com/scylladb/go-set v1.0.3-0.20200225121959-cc7b2070d91e // indirect
-	github.com/secure-systems-lab/go-securesystemslib v0.9.0 // indirect
+	github.com/secure-systems-lab/go-securesystemslib v0.9.1 // indirect
 	github.com/shibumi/go-pathspec v1.3.0 // indirect
 	github.com/shopspring/decimal v1.4.0 // indirect
 	github.com/sirupsen/logrus v1.9.4-0.20230606125235-dd1b4c2e81af // indirect
@@ -168,30 +168,29 @@ require (
 	github.com/xi2/xz v0.0.0-20171230120015-48954b6210f8 // indirect
 	github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e // indirect
 	github.com/zeebo/errs v1.4.0 // indirect
-	go.opentelemetry.io/auto/sdk v1.1.0 // indirect
+	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
 	go.opentelemetry.io/contrib/detectors/gcp v1.37.0 // indirect
 	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.62.0 // indirect
 	go.opentelemetry.io/contrib/instrumentation/net/http/httptrace/otelhttptrace v0.62.0 // indirect
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.62.0 // indirect
-	go.opentelemetry.io/otel v1.37.0 // indirect
-	go.opentelemetry.io/otel/metric v1.37.0 // indirect
-	go.opentelemetry.io/otel/sdk v1.37.0 // indirect
-	go.opentelemetry.io/otel/sdk/metric v1.37.0 // indirect
-	go.opentelemetry.io/otel/trace v1.37.0 // indirect
+	go.opentelemetry.io/otel v1.38.0 // indirect
+	go.opentelemetry.io/otel/metric v1.38.0 // indirect
+	go.opentelemetry.io/otel/sdk v1.38.0 // indirect
+	go.opentelemetry.io/otel/sdk/metric v1.38.0 // indirect
+	go.opentelemetry.io/otel/trace v1.38.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
-	golang.org/x/crypto v0.39.0 // indirect
-	golang.org/x/exp v0.0.0-20250620022241-b7579e27df2b // indirect
-	golang.org/x/net v0.41.0 // indirect
+	golang.org/x/crypto v0.42.0 // indirect
+	golang.org/x/net v0.44.0 // indirect
 	golang.org/x/oauth2 v0.30.0 // indirect
-	golang.org/x/sys v0.33.0 // indirect
-	golang.org/x/term v0.32.0 // indirect
-	golang.org/x/text v0.26.0 // indirect
-	golang.org/x/time v0.12.0 // indirect
+	golang.org/x/sys v0.37.0 // indirect
+	golang.org/x/term v0.35.0 // indirect
+	golang.org/x/text v0.29.0 // indirect
+	golang.org/x/time v0.14.0 // indirect
 	google.golang.org/api v0.240.0 // indirect
 	google.golang.org/genproto v0.0.0-20250707201910-8d1bb00bc6a7 // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20250707201910-8d1bb00bc6a7 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20250707201910-8d1bb00bc6a7 // indirect
-	google.golang.org/grpc v1.73.0 // indirect
-	google.golang.org/protobuf v1.36.9 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20250825161204-c5933d9347a5 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20250825161204-c5933d9347a5 // indirect
+	google.golang.org/grpc v1.76.0 // indirect
+	google.golang.org/protobuf v1.36.10 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )