chore: enable update for github actions in dependabot (#3734)

Co-authored-by: Mia-Cross <[email protected]>

Author: remyleone

.github/dependabot.yml

@@ -11,4 +11,9 @@ updates:
           interval: daily
       ignore:
         # Ignore sentry-go updates, cannot be updated to be used with our sentry
-        - dependency-name: "sentry-go"
+        - dependency-name: "sentry-go"
+
+    - package-ecosystem: "github-actions"
+      directory: "/"
+      schedule:
+        interval: monthly