Combine Dependabot auto-approve and auto-merge workflows

Co-authored-by: thomasturrell <1552612+thomasturrell@users.noreply.github.com>

Author: Copilot

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

@@ -0,0 +1,39 @@
+name: Dependabot Auto-Approve & Auto-Merge
+
+on:
+  pull_request:
+    types: [opened, reopened, synchronize]
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  dependabot:
+    runs-on: ubuntu-latest
+    if: github.event.pull_request.user.login == 'dependabot[bot]'
+
+    steps:
+      - name: Get Dependabot metadata
+        id: metadata
+        uses: dependabot/fetch-metadata@v2
+        with:
+          github-token: ${{ github.token }}
+
+      - name: Approve minor and patch updates
+        if: |
+          steps.metadata.outputs.update-type == 'version-update:semver-minor' ||
+          steps.metadata.outputs.update-type == 'version-update:semver-patch'
+        run: gh pr review --approve "$PR_URL"
+        env:
+          PR_URL: ${{ github.event.pull_request.html_url }}
+          GH_TOKEN: ${{ github.token }}
+
+      - name: Enable auto-merge for minor and patch updates
+        if: |
+          steps.metadata.outputs.update-type == 'version-update:semver-minor' ||
+          steps.metadata.outputs.update-type == 'version-update:semver-patch'
+        run: gh pr merge --auto --squash "$PR_URL"
+        env:
+          PR_URL: ${{ github.event.pull_request.html_url }}
+          GH_TOKEN: ${{ github.token }}