Automatic merge from submit-queue (batch tested with PRs 61803, 64305, 64170, 64361, 64339). 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>.

Remove some unnecessarily gendered pronouns in comments

**What this PR does / why we need it**:

A bunch of comments are unnecessarily gendered. I've changed them to gender-neutral they/theirs.

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```