chore: update Renovate configuration format

Migrates from deprecated config:base to recommended preset and updates commit message configuration to use separate prefix and suffix properties instead of single commitMessage field.

Changes package matching from patterns to names for better specificity in security update rules.

.github/renovate.json

@@ -2,7 +2,7 @@
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
   "description": "Renovate configuration for Streamyfin dependency management",
   "extends": [
-    "config:base",
+    "config:recommended",
     ":dependencyDashboard",
     ":enableVulnerabilityAlertsWithLabel(security)",
     ":semanticCommits",
@@ -25,7 +25,8 @@
   "minimumReleaseAge": "3 days",
   "schedule": ["before 6am on Monday"],
   "branchPrefix": "renovate/",
-  "commitMessage": "chore(deps): update {{depName}} to v{{newVersion}}",
+  "commitMessagePrefix": "chore(deps):",
+  "commitMessageSuffix": "update {{depName}} to v{{newVersion}}",
   "lockFileMaintenance": {
     "enabled": true,
     "groupName": "lockfiles",
@@ -66,7 +67,7 @@
       "description": "Security updates should be prioritized",
       "matchDatasources": ["npm"],
       "matchUpdateTypes": ["patch"],
-      "matchPackagePatterns": ["*"],
+      "matchPackageNames": ["*"],
       "schedule": ["at any time"],
       "automerge": true
     },