servo: Merge #14935 - Add git author (from paulrouget:gitAuthor); r=aneeshusa

fix https://github.com/servo/saltfs/issues/575

Source-Repo: https://github.com/servo/servo
Source-Revision: 124301cf484818a87ab0b3e0c4ef34645be66174

servo/etc/ci/upload_nightly.sh

@@ -52,7 +52,9 @@ update_brew() {
        > "${tmp_dir}/Formula/servo-bin.rb"
 
   git -C "${tmp_dir}" add ./Formula/servo-bin.rb
-  git -C "${tmp_dir}" commit -m "Version bump: ${version}"
+  git -C "${tmp_dir}" commit \
+      --author="Tom Servo <servo@servo.org>" \
+      --message="Version bump: ${version}"
 
   git -C "${tmp_dir}" push -qf \
       "https://${GITHUB_HOMEBREW_TOKEN}@github.com/servo/homebrew-servo.git" \