build(deps): bump google.golang.org/protobuf from 1.32.0 to 1.33.0

Bumps google.golang.org/protobuf from 1.32.0 to 1.33.0.

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

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

vendor/google.golang.org/protobuf/internal/impl/codec_tables.go

@@ -197,7 +197,7 @@ func fieldCoder(fd protoreflect.FieldDescriptor, ft reflect.Type) (*MessageInfo,
 		return getMessageInfo(ft), makeMessageFieldCoder(fd, ft)
 	case fd.Kind() == protoreflect.GroupKind:
 		return getMessageInfo(ft), makeGroupFieldCoder(fd, ft)
-	case fd.Syntax() == protoreflect.Proto3 && fd.ContainingOneof() == nil:
+	case !fd.HasPresence() && fd.ContainingOneof() == nil:
 		// Populated oneof fields always encode even if set to the zero value,
 		// which normally are not encoded in proto3.
 		switch fd.Kind() {