Monitor actions/setup-build/action.yaml (#3592)

* Monitor actions/setup-build/action.yaml

* Update .github/dependabot.yml

Co-authored-by: fendor <fendor@users.noreply.github.com>

---------

Co-authored-by: fendor <fendor@users.noreply.github.com>
Co-authored-by: Michael Peyton Jones <me@michaelpj.com>

Author: 3 people

.github/dependabot.yml

@@ -9,3 +9,8 @@ updates:
     directory: "/"
     schedule:
       interval: "weekly"
+
+  - package-ecosystem: "github-actions"
+    directory: ".github/actions/setup-build"
+    schedule:
+      interval: "weekly"