Merge pull request #29945 from travisdowns/td-suppress-protobuf-warnings

bazel: suppress protobuf deprecation warnings in generated .pb.cc files

Author: travisdowns

.bazelrc

@@ -84,6 +84,7 @@ build --per_file_copt=src/v/serde/protobuf/tests/round_trip_test.cc@-Wno-depreca
 build --per_file_copt=src/v/serde/protobuf/tests/parser_test.cc@-Wno-deprecated-declarations
 build --per_file_copt=src/v/iceberg/conversion/tests/iceberg_protobuf_tests.cc@-Wno-deprecated-declarations
 build --per_file_copt=src/v/pandaproxy/schema_registry/protobuf.cc@-Wno-deprecated-declarations
+build --per_file_copt=.*\\.pb\\.cc@-Wno-deprecated-declarations
 # Suppress deprecated declarations in the protobuf external module itself
 build --per_file_copt=external/protobuf.*@-Wno-deprecated-declarations
 build --host_per_file_copt=external/protobuf.*@-Wno-deprecated-declarations