ci: bring more automation

- Enable release-drafter GitHub Action to automatically draft a new release
  based on the commit messages.
- renovatebot: use central configuration file

Signed-off-by: Flavio Castelli <[email protected]>

Author: flavio

.github/release-drafter.yml

@@ -0,0 +1,66 @@
+categories:
+  - title: "⚠️  Breaking changes"
+    labels:
+      - "kind/major"
+      - "kind/breaking-change"
+  - title: "🚀 Features"
+    labels:
+      - "kind/enhancement"
+      - "kind/feature"
+  - title: "🐛 Bug Fixes"
+    labels:
+      - "kind/bug"
+  - title: "🧰 Maintenance"
+    labels:
+      - "kind/chore"
+      - "area/dependencies"
+
+exclude-labels:
+  - duplicate
+  - invalid
+  - later
+  - wontfix
+  - kind/question
+  - release/skip-changelog
+
+change-template: "- $TITLE (#$NUMBER)"
+change-title-escapes: '\<*_&' # You can add # and @ to disable mentions, and add ` to disable code blocks.
+name-template: "v$RESOLVED_VERSION"
+template: |
+  $CHANGES
+
+autolabeler:
+  # Tag any PR with "!" in the subject as major update. In other words, breaking change
+  - label: "kind/breaking-change"
+    title: "/.*!:.*/"
+  - label: "area/dependencies"
+    title: "chore(deps)"
+  - label: "area/dependencies"
+    title: "fix(deps)"
+  - label: "area/dependencies"
+    title: "build(deps)"
+  - label: "kind/feature"
+    title: "feat"
+  - label: "kind/bug"
+    title: "fix"
+  - label: "kind/chore"
+    title: "chore"
+
+version-resolver:
+  major:
+    labels:
+      - "kind/major"
+      - "kind/breaking-change"
+  minor:
+    labels:
+      - "kind/minor"
+      - "kind/feature"
+      - "kind/enhancement"
+  patch:
+    labels:
+      - "kind/patch"
+      - "kind/fix"
+      - "kind/bug"
+      - "kind/chore"
+      - "area/dependencies"
+  default: patch

.github/workflows/release-drafter.yml

@@ -0,0 +1,37 @@
+name: Release Drafter
+
+on:
+  workflow_dispatch:
+  push:
+    # branches to consider in the event; optional, defaults to all
+    branches:
+      - main
+  # pull_request event is required only for autolabeler
+  pull_request:
+    # Only following types are handled by the action, but one can default to all as well
+    types: [opened, reopened, synchronize, edited]
+  # pull_request_target event is required for autolabeler to support PRs from forks
+  pull_request_target:
+    types: [opened, reopened, synchronize, edited]
+
+permissions:
+  contents: read
+
+jobs:
+  update_release_draft:
+    permissions:
+      # write permission is required to create a github release
+      contents: write
+      # write permission is required for autolabeler
+      # otherwise, read permission is required at least
+      pull-requests: write
+    runs-on: ubuntu-latest
+    steps:
+      # Drafts your next Release notes as Pull Requests are merged into "master"
+      - uses: release-drafter/release-drafter@b1476f6e6eb133afa41ed8589daba6dc69b4d3f5 # v6.1.0
+        # (Optional) specify config name to use, relative to .github/. Default: release-drafter.yml
+        # with:
+        #   config-name: my-config.yml
+        #   disable-autolabeler: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

renovate.json

@@ -1,8 +1,13 @@
 {
   "extends": [
-    "config:base",
-    "group:allNonMajor",
-    "schedule:earlyMondays"
+    "github>kubewarden/github-actions//renovate-config/policies"
   ],
-  "labels": ["dependencies"]
+  "packageRules": [
+    {
+      "description": "Update GitHub Actions",
+      "matchManagers": ["github-actions"],
+      "groupName": "github-actions",
+      "groupSlug": "github-actions"
+    }
+  ]
 }