Add golangci-lint to renovate (#22)

Allow Renovate to update golangci-lint

Author: xballoy

.github/workflows/ci.yml

@@ -6,6 +6,9 @@ on:
   pull_request:
     branches: [ main ]
 
+env:
+  GOLANGCI_LINT_VERSION: "v1.55.2"
+
 jobs:
   build:
     strategy:
@@ -25,7 +28,7 @@ jobs:
       - name: Enforce standard format
         uses: golangci/[email protected]
         with:
-          version: v1.55.2
+          version: ${{ env.GOLANGCI_LINT_VERSION }}
           args: --timeout 3m --enable=gofmt --verbose
       - name: Test
         run: go test --cover -v ./...

renovate.json

@@ -5,6 +5,19 @@
     "schedule:weekly",
     ":automergeStableNonMajor"
   ],
+  "customManagers": [
+    {
+      "customType": "regex",
+      "fileMatch": [
+        "^.github/(?:workflows|actions)/.+\\.ya?ml$"
+      ],
+      "matchStrings": [
+        "GOLANGCI_LINT_VERSION: \"(?<currentValue>.*?)\""
+      ],
+      "depNameTemplate": "github.com/golangci/golangci-lint",
+      "datasourceTemplate": "go"
+    }
+  ],
   "golang": {
     "packageRules": [
       {