Update Dependabot config (#4764)

Signed-off-by: Holger Friedrich <mail@holger-friedrich.de>

Author: holgerfriedrich

.github/dependabot.yml

@@ -5,12 +5,17 @@
 
 version: 2
 updates:
-  - open-pull-requests-limit: 10
   - package-ecosystem: "github-actions" # See documentation for possible values
     directory: "/" # Location of package manifests
     schedule:
       interval: "weekly"
+    open-pull-requests-limit: 10
+    labels:
+      - dependencies
   - package-ecosystem: "maven" # See documentation for possible values
     directory: "/" # Location of package manifests
     schedule:
       interval: "weekly"
+    open-pull-requests-limit: 10
+    labels:
+      - dependencies