Add 5.x.x-stable branch to dependabot

Author: acogoluegnes

.github/dependabot.yml

@@ -7,6 +7,16 @@ updates:
     schedule:
       interval: "daily"
     open-pull-requests-limit: 20
+    target-branch: "main"
+    ignore:
+      - dependency-name: "org.eclipse.jetty:jetty-servlet"
+        versions: [ "[10.0,)" ]
+  - package-ecosystem: "maven"
+    directory: "/"
+    schedule:
+      interval: "daily"
+    open-pull-requests-limit: 20
+    target-branch: "5.x.x-stable"
     ignore:
       - dependency-name: "org.eclipse.jetty:jetty-servlet"
         versions: ["[10.0,)"]