feat(renovate): automerge PRs for patch updates (#5252)

* Enable automerge for non-major dep module updates

* Trigger integration tests on each renovatebot PR update

* Remove trailing space

* Set label for renovate PRs

* Enable rollback PRs

* Fix config: move rollbackPrs to proper place

* Fix workflow (trigger on push)

* Remove trailing space

* Automerge only patch version updates (except versions 0.x)

* Add packageRule for rollbackPrs

* Update renovate.json

---------

Co-authored-by: Ivan Nikiforov <ivan.nikiforov@sap.com>
Co-authored-by: Christopher Fenner <26137398+CCFenner@users.noreply.github.com>

.github/renovate.json

@@ -7,6 +7,24 @@
         "integration/testdata/**",
         "test/resources/**"
     ],
+    "labels": [
+        "dependencies"
+    ],
+    "packageRules": [
+        {
+            "description": "Create PRs to roll back Go module if the current version is not found in the registry.",
+            "matchManagers": ["gomod"],
+            "rollbackPrs": true
+        },
+        {
+            "description": "Automerge patch version updates for Go modules (except versions 0.x as they could have breaking changes)",
+            "matchManagers": ["gomod"],
+            "matchUpdateTypes": ["patch"],
+            "matchCurrentVersion": "!/^(v?0)/",
+            "automerge": true,
+            "addLabels": ["renovate-automerge"]
+        }
+    ],
     "postUpdateOptions": [
         "gomodTidy",
         "gomodUpdateImportPaths"

.github/workflows/renovate-integration-tests.yml

@@ -0,0 +1,39 @@
+name: Renovatebot - Trigger integration tests on PR update
+
+on:
+  push:
+    branches:
+      - 'renovate/**'
+
+jobs:
+  comment:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Post a comment on the PR
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const branch = context.ref.replace('refs/heads/', '');
+            const repository = context.repo.repo;
+            const owner = context.repo.owner;
+
+            // Find PRs associated with the branch
+            const { data: pullRequests } = await github.rest.pulls.list({
+              owner: owner,
+              repo: repository,
+              head: `${owner}:${branch}`,
+              state: 'open'
+            });
+
+            // Post a comment to each found PR
+            for (const pr of pullRequests) {
+              await github.rest.issues.createComment({
+                issue_number: pr.number,
+                owner: owner,
+                repo: repository,
+                body: '/it-go'
+              });
+            }