build(deps): Bump google.golang.org/grpc in /contrib (#1308)

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.75.1 to 1.76.0.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](grpc/grpc-go@v1.75.1...v1.76.0)

---
updated-dependencies:
- dependency-name: google.golang.org/grpc
  dependency-version: 1.76.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

contrib/go.mod

@@ -11,7 +11,7 @@ require (
 	github.com/envoyproxy/go-control-plane/envoy v1.36.0
 	github.com/envoyproxy/protoc-gen-validate v1.2.1
 	github.com/planetscale/vtprotobuf v0.6.1-0.20240319094008-0393e58bdf10
-	google.golang.org/grpc v1.75.1
+	google.golang.org/grpc v1.76.0
 	google.golang.org/protobuf v1.36.10
 )
 
@@ -20,6 +20,6 @@ require (
 	golang.org/x/net v0.42.0 // indirect
 	golang.org/x/sys v0.34.0 // indirect
 	golang.org/x/text v0.27.0 // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20250728155136-f173205681a0 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20250728155136-f173205681a0 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20250804133106-a7a43d27e69b // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20250804133106-a7a43d27e69b // indirect
 )

contrib/go.sum

@@ -36,11 +36,11 @@ golang.org/x/text v0.27.0 h1:4fGWRpyh641NLlecmyl4LOe6yDdfaYNrGb2zdfo4JV4=
 golang.org/x/text v0.27.0/go.mod h1:1D28KMCvyooCX9hBiosv5Tz/+YLxj0j7XhWjpSUF7CU=
 gonum.org/v1/gonum v0.16.0 h1:5+ul4Swaf3ESvrOnidPp4GZbzf0mxVQpDCYUQE7OJfk=
 gonum.org/v1/gonum v0.16.0/go.mod h1:fef3am4MQ93R2HHpKnLk4/Tbh/s0+wqD5nfa6Pnwy4E=
-google.golang.org/genproto/googleapis/api v0.0.0-20250728155136-f173205681a0 h1:0UOBWO4dC+e51ui0NFKSPbkHHiQ4TmrEfEZMLDyRmY8=
-google.golang.org/genproto/googleapis/api v0.0.0-20250728155136-f173205681a0/go.mod h1:8ytArBbtOy2xfht+y2fqKd5DRDJRUQhqbyEnQ4bDChs=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20250728155136-f173205681a0 h1:MAKi5q709QWfnkkpNQ0M12hYJ1+e8qYVDyowc4U1XZM=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20250728155136-f173205681a0/go.mod h1:qQ0YXyHHx3XkvlzUtpXDkS29lDSafHMZBAZDc03LQ3A=
-google.golang.org/grpc v1.75.1 h1:/ODCNEuf9VghjgO3rqLcfg8fiOP0nSluljWFlDxELLI=
-google.golang.org/grpc v1.75.1/go.mod h1:JtPAzKiq4v1xcAB2hydNlWI2RnF85XXcV0mhKXr2ecQ=
+google.golang.org/genproto/googleapis/api v0.0.0-20250804133106-a7a43d27e69b h1:ULiyYQ0FdsJhwwZUwbaXpZF5yUE3h+RA+gxvBu37ucc=
+google.golang.org/genproto/googleapis/api v0.0.0-20250804133106-a7a43d27e69b/go.mod h1:oDOGiMSXHL4sDTJvFvIB9nRQCGdLP1o/iVaqQK8zB+M=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20250804133106-a7a43d27e69b h1:zPKJod4w6F1+nRGDI9ubnXYhU9NSWoFAijkHkUXeTK8=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20250804133106-a7a43d27e69b/go.mod h1:qQ0YXyHHx3XkvlzUtpXDkS29lDSafHMZBAZDc03LQ3A=
+google.golang.org/grpc v1.76.0 h1:UnVkv1+uMLYXoIz6o7chp59WfQUYA2ex/BXQ9rHZu7A=
+google.golang.org/grpc v1.76.0/go.mod h1:Ju12QI8M6iQJtbcsV+awF5a4hfJMLi4X0JLo94ULZ6c=
 google.golang.org/protobuf v1.36.10 h1:AYd7cD/uASjIL6Q9LiTjz8JLcrh/88q5UObnmY3aOOE=
 google.golang.org/protobuf v1.36.10/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=