Use tgstation-server-ci[bot] for re-run flaky tests

.github/workflows/rerun-flaky-tests.yml

@@ -13,9 +13,17 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Generate App Token
+        id: app-token-generation
+        uses: getsentry/action-github-app-token@d4b5da6c5e37703f8c3b3e43abb5705b46e159cc
+        with:
+          app_id: ${{ secrets.APP_ID }}
+          private_key: ${{ secrets.APP_PRIVATE_KEY }}
+
       - name: Rerun flaky tests
         uses: actions/github-script@v7
         with:
+          github-token: ${{ steps.app-token-generation.outputs.token }}
           script: |
             const { rerunFlakyTests } = await import('${{ github.workspace }}/.github/workflows/scripts/rerunFlakyTests.js')
             await rerunFlakyTests({ github, context })