Fix Renovate version handling for NeoForge (#145)

Author: jpenilla

renovate.json

@@ -23,7 +23,7 @@
       "matchPackageNames": [
         "net.neoforged:neoforge"
       ],
-      "versioning": "regex:^(?<compatibility>(?:\\d+\\.){2})(?<minor>\\d+)(-beta)?$"
+      "versioning": "regex:^(?<compatibility>(?:\\d+\\.){3})(?<minor>\\d+)(?:-beta)?$"
     },
     {
       "matchManagers": [