Add GitHub Actions update policy to compose file

Author: olblak

updatecli-compose.yaml

@@ -66,3 +66,9 @@ policies:
         files:
           - "updatecli-compose.yaml"
           - "updatecli-compose-release.yaml"
+  
+  - name: Update githubactions
+    policy: ghcr.io/updatecli/policies/autodiscovery/githubaction:0.4.1@sha256:869b676074f9fee7edd5d488140a12c3b09a5f8a175f12f26ea85a4f8bd0a9d1
+    values:
+      - updatecli/values.d/scm.yaml
+