update renovate to use config.js and bump helm chart version going forward

.github/config.js

@@ -0,0 +1,41 @@
+module.exports = {
+  branchPrefix: 'test-renovate/',
+  username: 'renovate-release',
+  gitAuthor: 'Renovate Bot <bot@renovateapp.com>',
+  platform: 'github',
+  includeForks: true,
+  dryRun: 'full',
+  repositories: ['jessebot/mastodon-helm-chart'],
+    extends: ['config:base'],
+    allowPostUpgradeCommandTemplating: true,
+    allowedPostUpgradeCommands: ['^.*'],
+    regexManagers: [
+        {
+            fileMatch: ['(^|/)Chart\\.yaml$'],
+            matchStrings: [
+                '#\\s?renovate: image=(?<depName>.*?)\\s?appVersion:\\s?\\"?(?<currentValue>[\\w+\\.\\-]*)',
+            ],
+            datasourceTemplate: 'docker',
+        },
+    ],
+    packageRules: [
+        {
+            matchManagers: ['helm-requirements', 'helm-values', 'regex'],
+            postUpgradeTasks: {
+                commands: [
+                  `version=$(grep '^version:' {{{parentDir}}}/Chart.yaml | awk '{print $2}')
+                  major=$(echo $version | cut -d. -f1)
+                  minor=$(echo $version | cut -d. -f2)
+                  patch=$(echo $version | cut -d. -f3)
+                  minor=$(expr $minor + 1)
+                  echo "Replacing $version with $major.$minor.$patch"
+                  sed -i "s/^version:.*/version: $\{major\}.$\{minor\}.$\{patch\}/g" {{{parentDir}}}/Chart.yaml
+                  cat {{{parentDir}}}/Chart.yaml
+                  `,
+                ],
+            },
+            fileFilters: ['**/Chart.yaml'],
+            executionMode: 'branch',
+        },
+    ],
+};

.github/renovate.json

@@ -1,14 +0,0 @@
-{
-  "repositories": [
-    "jessebot/mastodon-helm-chart"
-  ],
-  "regexManagers": [
-    {
-      "datasourceTemplate": "docker",
-      "fileMatch": ["(^|/)Chart\\.yaml$"],
-      "matchStrings": [
-        "#\\s?renovate: image=(?<depName>.*?)\\s?appVersion:\\s?\\\"?(?<currentValue>[\\w+\\.\\-]*)\""
-      ]
-    }
-  ]
-}

.github/workflows/renovate.yaml

@@ -14,4 +14,4 @@ jobs:
         uses: renovatebot/github-action@v39.0.1
         with:
           token: ${{ secrets.RENOVATE_TOKEN }}
-          configurationFile: .github/renovate.json
+          configurationFile: .github/config.js