Set dependabot weekly interval and David as assignee

.github/dependabot.yml

@@ -1,13 +1,14 @@
----
 version: 2
 updates:
-  - package-ecosystem: pip
-    directory: "/"
-    schedule:
-      interval: daily
-    open-pull-requests-limit: 5
   - package-ecosystem: github-actions
     directory: "/"
     schedule:
-      interval: daily
+      interval: weekly
-    open-pull-requests-limit: 3
+    assignees:
+      - "David-Wobrock"
+  - package-ecosystem: pip
+    directory: "/"
+    schedule:
+      interval: weekly
+    assignees:
+      - "David-Wobrock"