Update get-fellows-action to v1.1.1 (polkadot-fellows#265)

<!-- Remember that you can run `/merge` to enable auto-merge in the PR
-->

<!-- Remember to modify the changelog. If you don't need to modify it,
you can check the following box.
Instead, if you have already modified it, simply delete the following
line. -->

- [x] Does not require a CHANGELOG entry

.github/workflows/auto-merge.yml

@@ -14,7 +14,7 @@ jobs:
     if: ${{ github.event.issue.pull_request && startsWith(github.event.comment.body, '/merge') }}
     steps:
       - name: Get the GitHub handle of the fellows
-        uses: paritytech/[email protected].0
+        uses: paritytech/[email protected].1
         id: fellows
       - name: Generate a token
         id: merge_token