Automatic merge from submit-queue (batch tested with PRs 51796, 52223)

Add bsalamat to sig-scheduling-maintainers

**What this PR does / why we need it**:
Adds bsalamat to sig-scheduling-maintainers.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes # N/A

**Release note**:

```release-note
NONE
```

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