Add keepalive workflow

.github/workflows/ci.yml

@@ -1,21 +1,10 @@
 name: ci
 
-"on":
+on:
   push:
-    paths:
-      - ".github/workflows/ci.yml"
-      - "lib/**"
-      - "*.gemspec"
-      - "spec/**"
-      - "Rakefile"
-      - "Gemfile"
-      - ".rubocop.yml"
   pull_request:
-    branches:
-      - main
   schedule:
     - cron: "30 4 * * *"
-  create:
 
 jobs:
   tests:
@@ -48,6 +37,14 @@ jobs:
         uses: actions/setup-node@v1
         with:
           node-version: 20.x
-          registry-url: 'https://registry.npmjs.org'
+          registry-url: "https://registry.npmjs.org"
       - name: Run the test suite
         run: bundle exec rake
+
+  workflow-keepalive:
+    if: github.event_name == 'schedule'
+    runs-on: ubuntu-latest
+    permissions:
+      actions: write
+    steps:
+      - uses: liskin/gh-workflow-keepalive@v1