Chore(deps): update actions

- groups updates into one pr
- runs weekly, etc.

Signed-off-by: Till Klampaeckel <[email protected]>

Author: till

.github/dependabot.yml

@@ -0,0 +1,10 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    groups:
+      actions-deps:
+        patterns:
+          - "*"