Ignore Maven Core updates

Author: slawekjaranowski

.github/dependabot.yml

@@ -22,7 +22,10 @@ updates:
     interval: daily
     time: '04:00'
   open-pull-requests-limit: 10
+  ignore:
+    # Ignore Maven Core updates
+    - dependency-name: "org.apache.maven:*"
 - package-ecosystem: "github-actions"
   directory: "/"
   schedule:
-    interval: "daily"
+    interval: "daily"