Enable Ruff EXE (flake8-executable) (#13346)

scripts/sync_protobuf/google_protobuf.py

@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 """
 Generates the protobuf stubs for the given protobuf version using mypy-protobuf.
 Generally, new minor versions are a good time to update the stubs.

scripts/sync_protobuf/s2clientprotocol.py

@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 """
 Generates the protobuf stubs for the given s2clientprotocol version using mypy-protobuf.
 Generally, new minor versions are a good time to update the stubs.

scripts/sync_protobuf/tensorflow.py

@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 """
 Generates the protobuf stubs for the given tensorflow version using mypy-protobuf.
 Generally, new minor versions are a good time to update the stubs.