fix: push release PR updates via Git Data API instead of code-suggester - #2774

fix: push release PR updates via Git Data API instead of code-suggester#2774

Kerwood wants to merge 3 commits into

googleapis:maingoogleapis/release-please:mainfrom

Kerwood:fix/update-pr-via-git-data-apiKerwood/release-please:fix/update-pr-via-git-data-apiCopy head branch name to clipboard