factor out keep alive

.github/workflows/release-sync.yml

@@ -7,15 +7,6 @@ on:
     - cron:  '0 12 * * 0'
 
 jobs:
-  keep-alive:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Keep cronjob based triggers of GitHub workflows alive
-        uses: PhrozenByte/gh-workflow-immortality@v1
-        with:
-          secret: ${{ secrets.GH_TOKEN }}
-          repos: ${{ github.repository }}
-
   release-sync:
     runs-on: ubuntu-latest
     steps:

.github/workflows/workflow-keep-alive.yml

@@ -0,0 +1,21 @@
+name: Workflow Keep Alive
+
+on:
+  schedule:
+    # run once a month on the first day of the month at 00:20 UTC
+    - cron: '20 0 1 * *'
+  workflow_dispatch: {}
+
+jobs:
+  keepalive:
+    name: GitHub Workflow Immortality
+
+    runs-on: ubuntu-latest
+    permissions: {}
+
+    steps:
+      - name: Keep cronjob based triggers of GitHub workflows alive
+        uses: PhrozenByte/gh-workflow-immortality@v1
+        with:
+          secret: ${{ secrets.GH_TOKEN }}
+          repos: ${{ github.repository }}