vendoring: pin structured-merge-diff to v4.4.1

A backward incompatible change was made:
kubernetes-sigs/structured-merge-diff@c68c9ee

Which is not compatible with k8s v0.31.2.
An update was done very recently but not released yet:
kubernetes/kubernetes@2bc17d1#diff-1966d58e97bf87f3cd69e4957a2c948a72ca97c36df3ea099ac0ea6592e42dbfL56

So in the meantime we need to pin structured-merge-diff to v4.4.1 to not
have this compilation error:

```
/root/go/pkg/mod/k8s.io/[email protected]/pkg/util/managedfields/internal/structuredmerge.go:56:4: unknown field IgnoredFields in struct literal of type merge.Updater
/root/go/pkg/mod/k8s.io/[email protected]/pkg/util/managedfields/internal/structuredmerge.go:73:4: unknown field IgnoredFields in struct literal of type merge.Updater
```

Author: EmilienM

.github/dependabot.yml

@@ -48,6 +48,8 @@ updates:
     - dependency-name: "github.com/prometheus/*"
       update-types: [ "version-update:semver-major", "version-update:semver-minor" ]
     - dependency-name: "sigs.k8s.io/cluster-api-provider-openstack"
+    # We will need k8s v0.31.3 to bump structured-merge-diff to v4.4.2 (check git history for details).
+    - dependency-name: "sigs.k8s.io/structured-merge-diff"
   labels:
     - "area/dependency"
-    - "ok-to-test"
+    - "ok-to-test"

go.mod

@@ -32,7 +32,7 @@ require (
 	sigs.k8s.io/cluster-api v1.8.4
 	sigs.k8s.io/cluster-api/test v1.8.4
 	sigs.k8s.io/controller-runtime v0.19.1
-	sigs.k8s.io/structured-merge-diff/v4 v4.4.2
+	sigs.k8s.io/structured-merge-diff/v4 v4.4.1
 	sigs.k8s.io/yaml v1.4.0
 )
 

go.sum

@@ -425,6 +425,7 @@ gopkg.in/ini.v1 v1.67.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/natefinch/lumberjack.v2 v2.2.1 h1:bBRl1b0OH9s/DuPhuXpNl+VtCaJXFZ5/uEFST95x9zc=
 gopkg.in/natefinch/lumberjack.v2 v2.2.1/go.mod h1:YD8tP3GAjkrDg1eZH7EGmyESg/lsYskCTPBJVb9jqSc=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
@@ -469,7 +470,7 @@ sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd h1:EDPBXCAspyGV4jQlpZSudPeMm
 sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd/go.mod h1:B8JuhiUyNFVKdsE8h686QcCxMaH6HrOAZj4vswFpcB0=
 sigs.k8s.io/kind v0.24.0 h1:g4y4eu0qa+SCeKESLpESgMmVFBebL0BDa6f777OIWrg=
 sigs.k8s.io/kind v0.24.0/go.mod h1:t7ueEpzPYJvHA8aeLtI52rtFftNgUYUaCwvxjk7phfw=
-sigs.k8s.io/structured-merge-diff/v4 v4.4.2 h1:MdmvkGuXi/8io6ixD5wud3vOLwc1rj0aNqRlpuvjmwA=
-sigs.k8s.io/structured-merge-diff/v4 v4.4.2/go.mod h1:N8f93tFZh9U6vpxwRArLiikrE5/2tiu1w1AGfACIGE4=
+sigs.k8s.io/structured-merge-diff/v4 v4.4.1 h1:150L+0vs/8DA78h1u02ooW1/fFq/Lwr+sGiqlzvrtq4=
+sigs.k8s.io/structured-merge-diff/v4 v4.4.1/go.mod h1:N8hJocpFajUSSeSJ9bOZ77VzejKZaXsTtZo4/u7Io08=
 sigs.k8s.io/yaml v1.4.0 h1:Mk1wCc2gy/F0THH0TAp1QYyJNzRm2KCLy3o5ASXVI5E=
 sigs.k8s.io/yaml v1.4.0/go.mod h1:Ejl7/uTz7PSA4eKMyQCUTnhZYNmLIl+5c2lQPGR2BPY=

orc/go.mod

@@ -20,7 +20,7 @@ require (
 	k8s.io/kube-openapi v0.0.0-20240228011516-70dd3763d340
 	k8s.io/utils v0.0.0-20240711033017-18e509b52bc8
 	sigs.k8s.io/controller-runtime v0.19.1
-	sigs.k8s.io/structured-merge-diff/v4 v4.4.2
+	sigs.k8s.io/structured-merge-diff/v4 v4.4.1
 	sigs.k8s.io/yaml v1.4.0
 )
 

orc/go.sum

@@ -227,6 +227,7 @@ gopkg.in/evanphx/json-patch.v4 v4.12.0 h1:n6jtcsulIzXPJaxegRbvFNNrZDjbij7ny3gmSP
 gopkg.in/evanphx/json-patch.v4 v4.12.0/go.mod h1:p8EYWUEYMpynmqDbY58zCKCFZw8pRWMG4EsWvDvM72M=
 gopkg.in/inf.v0 v0.9.1 h1:73M5CoZyi3ZLMOyDlQh031Cx6N9NDJ2Vvfl76EDAgDc=
 gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
+gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
@@ -260,7 +261,7 @@ sigs.k8s.io/controller-runtime v0.19.1 h1:Son+Q40+Be3QWb+niBXAg2vFiYWolDjjRfO8hn
 sigs.k8s.io/controller-runtime v0.19.1/go.mod h1:iRmWllt8IlaLjvTTDLhRBXIEtkCK6hwVBJJsYS9Ajf4=
 sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd h1:EDPBXCAspyGV4jQlpZSudPeMmr1bNJefnuqLsRAsHZo=
 sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd/go.mod h1:B8JuhiUyNFVKdsE8h686QcCxMaH6HrOAZj4vswFpcB0=
-sigs.k8s.io/structured-merge-diff/v4 v4.4.2 h1:MdmvkGuXi/8io6ixD5wud3vOLwc1rj0aNqRlpuvjmwA=
-sigs.k8s.io/structured-merge-diff/v4 v4.4.2/go.mod h1:N8f93tFZh9U6vpxwRArLiikrE5/2tiu1w1AGfACIGE4=
+sigs.k8s.io/structured-merge-diff/v4 v4.4.1 h1:150L+0vs/8DA78h1u02ooW1/fFq/Lwr+sGiqlzvrtq4=
+sigs.k8s.io/structured-merge-diff/v4 v4.4.1/go.mod h1:N8hJocpFajUSSeSJ9bOZ77VzejKZaXsTtZo4/u7Io08=
 sigs.k8s.io/yaml v1.4.0 h1:Mk1wCc2gy/F0THH0TAp1QYyJNzRm2KCLy3o5ASXVI5E=
 sigs.k8s.io/yaml v1.4.0/go.mod h1:Ejl7/uTz7PSA4eKMyQCUTnhZYNmLIl+5c2lQPGR2BPY=