[Misc] Fix renovate config

Author: abrassat

.github/renovate.json5

@@ -25,7 +25,7 @@
   // Skip Eclipse M2E special setup "dependency"
   "ignoreDeps": ["org.eclipse.m2e:lifecycle-mapping"],
 
-  "baseBranchPatterns" : ["stable-2.x"],
+  "baseBranchPatterns" : ["stable-3.x"],
 
   "packageRules": [
     // Indicate the URL to the XWiki org and xwikisas Nexus public proxy for non-Central Maven dependencies