Add copybara to cc's and and label (#8929)
Add copybara to cc's and and label (#8929)

Same as https://github.com/google/oss-fuzz/pull/8927 but for
protobuf-python

Co-authored-by: Navidem <9bc92b15850d98e219060076fb851e99b5adb862@gmail.com>
google/oss-fuzz,google/oss-fuzz,google/oss-fuzz,google/oss-fuzz,google/oss-fuzz,google/oss-fuzz,google/oss-fuzz,google/oss-fuzz,google/oss-fuzz,google/oss-fuzz,google/oss-fuzz