Merge branch 'sh-update-grpc-for-migrate-from-v12.10.0' into 'master'

[RUN ALL RSPEC] Fix migrate-from-v12.10.0 job not working with Ruby v2.7

See merge request gitlab-org/gitlab!46073

.gitlab/ci/rails.gitlab-ci.yml

@@ -285,6 +285,8 @@ db:migrate-from-v12.10.0:
     - '[[ -d "ee/" ]] || export TAG_TO_CHECKOUT="v12.10.0"'
     - git fetch https://gitlab.com/gitlab-org/$PROJECT_TO_CHECKOUT.git $TAG_TO_CHECKOUT
     - git checkout -f FETCH_HEAD
+    - sed -i -e "s/gem 'grpc', '~> 1.24.0'/gem 'grpc', '~> 1.30.2'/" Gemfile # Update gRPC for Ruby 2.7
+    - sed -i -e "s/gem 'google-protobuf', '~> 3.8.0'/gem 'google-protobuf', '~> 3.12.0'/" Gemfile
     - bundle update google-protobuf grpc bootsnap
     - bundle install $BUNDLE_INSTALL_FLAGS
     - date
@@ -397,6 +399,7 @@ rspec:feature-flags:
     - memory-static
     - memory-on-boot
   script:
+    - run_timed_command "gem install bundler -v 1.17.3"
     - run_timed_command "bundle install --jobs=$(nproc) --path=vendor --retry=3 --quiet --without default development test production puma unicorn kerberos metrics omnibus ed25519"
     - run_timed_command "bundle exec scripts/used-feature-flags"
 # EE/FOSS: default refs (MRs, master, schedules) jobs #