(maint) Update label sync version

There is a new version of the label sync workflow available,
and since it is currently failing, it would be appropriate to try
upgrading this version now before continue any further
investigation.

.github/workflows/label-sync.yml

@@ -14,11 +14,11 @@ jobs:
       # uncomment the uses line if additional configuration in the current
       # repository is used.
       #- uses: actions/[email protected]
-      - uses: EndBug/label-sync@v2.2.0
+      - uses: EndBug/label-sync@v2.3.3
         with:
           config-file: |
             https://raw.githubusercontent.com/chocolatey/.github/master/.github/labels.yml
           request-token: ${{ secrets.SYNC_TOKEN }} # Used when getting the config files.
           delete-other-labels: true # After initial run, and verification change this to true
           dry-run: false
-          token: ${{ secrets.SYNC_TOKEN }} # Used when updating the labels on the repository.
+          token: ${{ secrets.SYNC_TOKEN }} # Used when updating the labels on the repository.