chore(deps): bump golang.org/x/net in /t/grpc_server_example

Bumps [golang.org/x/net](https://github.com/golang/net) from 0.7.0 to 0.55.0.
- [Commits](golang/net@v0.7.0...v0.55.0)

---
updated-dependencies:
- dependency-name: golang.org/x/net
  dependency-version: 0.55.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

t/grpc_server_example/go.mod

@@ -1,10 +1,17 @@
 module github.com/api7/grpc_server_example
 
-go 1.11
+go 1.25.0
 
 require (
 	github.com/golang/protobuf v1.5.2
-	golang.org/x/net v0.7.0
+	golang.org/x/net v0.55.0
 	google.golang.org/grpc v1.53.0
 	google.golang.org/protobuf v1.33.0
 )
+
+require (
+	github.com/google/go-cmp v0.6.0 // indirect
+	golang.org/x/sys v0.45.0 // indirect
+	golang.org/x/text v0.37.0 // indirect
+	google.golang.org/genproto v0.0.0-20230110181048-76db0878b65f // indirect
+)