(maint) Enable deleting old labels

This commit updates the label sync handler to delete any old labels we
have in the repository.

This is fine in this instance, as we have quite few issues available in
this repository and can make manual changes if needed if any labels are
removed from the issues.

Author: AdmiringWorm

.github/workflows/label-sync.yml

@@ -19,6 +19,6 @@ jobs:
           config-file: |
             https://raw.githubusercontent.com/chocolatey/.github/main/.github/labels.yml
           request-token: ${{ secrets.SYNC_TOKEN }} # Used when getting the config files.
-          delete-other-labels: false # After initial run, and verification change this to true
+          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.