Implement dependabot auto-merge workflows

.github/workflows/auto-approve.yml

@@ -0,0 +1,14 @@
+name: Auto approve
+
+on: pull_request_target
+
+jobs:
+  auto-approve:
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+    if: github.actor == 'dependabot[bot]'
+    steps:
+      - uses: hmarr/auto-approve-action@v3
+        with:
+            github-token: ${{ secrets.PAT_TOKEN }}

.github/workflows/dependabot-auto-merge.yml

@@ -0,0 +1,31 @@
+name: Dependabot Auto-Merge
+on: 
+  pull_request_target:
+    types:
+      - opened
+  workflow_run:
+    workflows: ["Lint", "CodeQL"]
+    branches: [dev]
+    types: 
+      - completed
+
+permissions:
+  pull-requests: write
+  contents: write
+
+jobs:
+  dependabot:
+    runs-on: ubuntu-latest
+    if: ${{ github.actor == 'dependabot[bot]'}}
+    steps:
+      - name: Dependabot metadata
+        id: metadata
+        uses: dependabot/fetch-metadata@v1
+        with:
+          github-token: "${{ secrets.GITHUB_TOKEN }}"
+      - name: Enable auto-merge for Dependabot PRs
+        if: ${{steps.metadata.outputs.update-type != 'version-update:semver-major'}}
+        run: gh pr merge --auto --squash "$PR_URL"
+        env:
+          PR_URL: ${{github.event.pull_request.html_url}}
+          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}