Update Github Actions with Dependabot

Author: dolfinus

.github/dependabot.yml

@@ -0,0 +1,10 @@
+# Set update schedule for GitHub Actions
+
+version: 2
+updates:
+- package-ecosystem: github-actions
+  directory: /
+  schedule:
+    interval: daily
+  labels:
+  - github-actions

.github/workflows/automerge.yml

@@ -7,7 +7,7 @@ jobs:
   automerge:
     name: Enable pull request automerge
     runs-on: ubuntu-latest
-    if: github.event.pull_request.user.login == 'pre-commit-ci[bot]'
+    if: github.event.pull_request.user.login == 'pre-commit-ci[bot]' || github.event.pull_request.user.login == 'dependabot[bot]'
 
     steps:
     - uses: alexwilson/[email protected]
@@ -19,7 +19,7 @@ jobs:
     name: Automatically approve pull request
     needs: [automerge]
     runs-on: ubuntu-latest
-    if: github.event.pull_request.user.login == 'pre-commit-ci[bot]'
+    if: github.event.pull_request.user.login == 'pre-commit-ci[bot]' || github.event.pull_request.user.login == 'dependabot[bot]'
 
     steps:
     - uses: hmarr/auto-approve-action@v2