feat(deps) add 7d cooldown for external deps and 0 for internal (#214)

* feat(deps) add 7d cooldown for external deps and 0 for internal

* fix(deps) manage internal vs external dependencies via cooldown.exclude

Author: cgoetz-inovex

.github/dependabot.yml

@@ -4,3 +4,12 @@ updates:
     directory: "/"
     schedule:
       interval: "daily"
+    cooldown:
+      default-days: 7
+  - package-ecosystem: "gradle"
+    directory: "/"
+    schedule:
+      interval: "daily"
+    cooldown:
+        default-days: 7
+        exclude: ["cloud.stackit*"]