feat(ci): Change github token

Author: galin-s

.github/workflows/trigger-downstream-flake-update.yml

@@ -14,11 +14,17 @@ jobs:
         include:
           - repo: 'metacraft-labs/nix-blockchain-development'
     steps:
+      - uses: tibdex/[email protected]
+        id: generate-token
+        with:
+          app_id: ${{ secrets.CREATE_PR_APP_ID }}
+          private_key: ${{ secrets.CREATE_PR_APP_PRIVATE_KEY }}
+
       - name: Trigger Downstream Pipeline
         run: |
           curl -L -X POST \
             -H "Accept: application/vnd.github+json" \
-            -H "Authorization: token ${{ github.token }}" \
+            -H "Authorization: token ${{ steps.generate-token.outputs.token }}" \
             -H "X-GitHub-Api-Version: 2022-11-28"  \
             "https://api.github.com/repos/${{ matrix.repo }}/dispatches" \
             -d '{"event_type":"flake-update"}'