Automatic merge from submit-queue (batch tested with PRs 54875, 54813, 54595, 54947, 54766). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Make github hide generated files in diffs

**What this PR does / why we need it**:
https://github.com/github/linguist#generated-code says to add `linguist-generated=true` to any files that you don't want to see diffs in. IMO this will make PRs a little easier to review.

e.g. the top half of https://github.com/kubernetes/kubernetes/pull/53988 should disappear

**Which issue this PR fixes** 

**Special notes for your reviewer**:

**Release note**: NONE