Use github_token also for auto_approve

Signed-off-by: tobiasKaminsky <tobias@kaminsky.me>

.github/workflows/autoApproveDependabot.yml

@@ -10,4 +10,4 @@ jobs:
             -   uses: hmarr/auto-approve-action@v2.0.0
                 if: github.actor == 'dependabot[bot]' || github.actor == 'dependabot-preview[bot]'
                 with:
-                    github-token: "${{ secrets.DEPENDABOT_AUTOMERGE_TOKEN }}"
+                    github-token: "${{ secrets.GITHUB_TOKEN }}"