chore(deps): update backstage/actions action to v0.2.1

Signed-off-by: Renovate Bot <bot@renovateapp.com>

.github/workflows/cron.yml

@@ -8,7 +8,7 @@ jobs:
   cron:
     runs-on: ubuntu-latest
     steps:
-      - uses: backstage/actions/cron@v0.1.12
+      - uses: backstage/actions/cron@v0.2.1
         with:
           app-id: ${{ secrets.BACKSTAGE_GOALIE_APPLICATION_ID }}
           private-key: ${{ secrets.BACKSTAGE_GOALIE_PRIVATE_KEY }}

.github/workflows/issue.yaml

@@ -10,4 +10,4 @@ jobs:
     if: github.repository == 'backstage/backstage'
     steps:
       - name: Issue sync
-        uses: backstage/actions/issue-sync@v0.1.8
+        uses: backstage/actions/issue-sync@v0.2.1

.github/workflows/pr.yaml

@@ -9,6 +9,6 @@ jobs:
     if: github.repository == 'backstage/backstage'
     steps:
       - name: PR sync
-        uses: backstage/actions/pr-sync@v0.1.8
+        uses: backstage/actions/pr-sync@v0.2.1
         with:
           github-token: ${{ secrets.GH_SERVICE_ACCOUNT_TOKEN }}