chore(deps): migrate renovate config to shared preset

.github/CODEOWNERS

@@ -1,2 +1,10 @@
-# Default code owner for all files
-* @ivuorinen
+# Global owners
+*       @ivuorinen
+
+# Workflow files
+.github/workflows/    @ivuorinen
+
+# Security files
+SECURITY.md          @ivuorinen
+suppressions.xml     @ivuorinen
+.gitleaks.toml      @ivuorinen

.github/renovate.json

@@ -1,8 +1,8 @@
 {
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
   "extends": [
-    "github>ivuorinen/renovate-config",
-    "customManagers:biomeVersions"
+    "customManagers:biomeVersions",
+    "github>ivuorinen/renovate-config"
   ],
   "pinDigests": true,
   "platformAutomerge": true,