Regenerate the protobuf code to stop using deprecated github.com/golang/protobuf

Signed-off-by: Miloslav Trmač <mitr@redhat.com>

Author: mtrmac

Makefile

@@ -32,4 +32,7 @@ test:
 	go test ./... -test.v
 
 generate-protobuf:
-	protoc  -I utils/keyprovider/ utils/keyprovider/keyprovider.proto --go_out=plugins=grpc:utils/keyprovider
+	protoc  -I utils/keyprovider/ \
+		--go_out=utils/keyprovider --go_opt=paths=source_relative \
+		--go-grpc_out=utils/keyprovider --go-grpc_opt=paths=source_relative \
+		utils/keyprovider/keyprovider.proto

go.mod

@@ -4,7 +4,6 @@ go 1.25.0
 
 require (
 	github.com/go-jose/go-jose/v4 v4.1.4
-	github.com/golang/protobuf v1.5.4
 	github.com/miekg/pkcs11 v1.1.2
 	github.com/opencontainers/go-digest v1.0.0
 	github.com/opencontainers/image-spec v1.1.1
@@ -16,6 +15,7 @@ require (
 	golang.org/x/crypto v0.51.0
 	golang.org/x/term v0.43.0
 	google.golang.org/grpc v1.81.1
+	google.golang.org/protobuf v1.36.11
 )
 
 require (
@@ -25,6 +25,5 @@ require (
 	golang.org/x/sys v0.45.0 // indirect
 	golang.org/x/text v0.37.0 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20260511170946-3700d4141b60 // indirect
-	google.golang.org/protobuf v1.36.11 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )