New workflow: test

.github/workflows/test.yml

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+name: Validate Renovate Config
+
+on:
+    push:
+        branches:
+        - main
+        - master
+    pull_request:
+        branches:
+        - main
+        - master
+
+jobs:
+    validate:
+        runs-on: ubuntu-latest
+
+        steps:
+        - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+
+        - uses: actions/setup-node@60edb5dd545a775178f52524783378180af0d1f8 # v4.0.2
+          with:
+            node-version: '20.x'
+
+        - name: Validate Renovate config
+          run: npx --yes --package renovate -- renovate-config-validator default.json
+
+    needs_migration:
+        runs-on: ubuntu-latest
+
+        steps:
+        - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+
+        - uses: actions/setup-node@60edb5dd545a775178f52524783378180af0d1f8 # v4.0.2
+          with:
+            node-version: '20.x'
+
+        - name: Validate Renovate config
+          run: npx --yes --package renovate -- renovate-config-validator --strict default.json

.gitignore

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+# Node.js
+node_modules/
+npm-debug.log
+yarn-error.log
+
+# Editors
+.idea/
+.vscode/
+*.swp
+*.swo
+*.swn
+*.bak
+*.orig
+*.sublime-*
+*.iml
+
+# Operating Systems
+# macOS
+.DS_Store
+.AppleDouble
+.LSOverride
+Icon
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Desktop.ini
+
+# Windows
+Thumbs.db
+Desktop.ini