feat: Add Renovate configuration for automatic Docker image updates

- Configured Renovate to track Docker/OCI images in registry YAML files
- Set up automatic detection of image versions using regex patterns
- Grouped all registry image updates together for easier management
- Enabled automerge for patch updates to keep images current
- Configured semantic commits for clear update history

This will help maintain up-to-date image references across all MCP server entries.

Author: JAORMX

renovate.json

@@ -0,0 +1,38 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "config:recommended"
+  ],
+  "labels": ["dependencies"],
+  "postUpdateOptions": ["gomodTidy"],
+  "customManagers": [
+    {
+      "customType": "regex",
+      "description": "Update Docker/OCI image versions in registry YAML files",
+      "fileMatch": ["^registry/.*/spec\\.ya?ml$"],
+      "matchStrings": [
+        "image:\\s*[\"']?(?<depName>[^:\"'\\s]+):(?<currentValue>[^\"'\\s]+)[\"']?\\s*(?:#.*)?"
+      ],
+      "datasourceTemplate": "docker"
+    }
+  ],
+  "packageRules": [
+    {
+      "description": "Group all registry image updates",
+      "matchPaths": ["registry/**"],
+      "groupName": "registry-images",
+      "groupSlug": "registry-images"
+    },
+    {
+      "description": "Automerge patch updates for registry images",
+      "matchPaths": ["registry/**"],
+      "matchUpdateTypes": ["patch"],
+      "automerge": true
+    }
+  ],
+  "prConcurrentLimit": 10,
+  "prCreation": "immediate",
+  "semanticCommits": "enabled",
+  "semanticCommitType": "chore",
+  "semanticCommitScope": "deps"
+}