chore: fix env var name in release_notes (#3936)

Author: nbbeeken

.github/workflows/release_notes.yml

@@ -25,7 +25,7 @@ jobs:
       # Not only is 'triggering_actor' common between the trigger events it will also change if someone re-runs an old job
       - name: check if triggering_actor is allowed to generate notes
         env:
-          GH_TOKEN: ${{ github.token }}
+          GITHUB_TOKEN: ${{ github.token }}
           COMMENTER: ${{ github.triggering_actor && github.triggering_actor || 'empty_triggering_actor' }}
           API_ENDPOINT: /repos/${{ github.repository }}/collaborators?permission=admin
         shell: bash