Update bazel ci for gz-sensors10 (#550)

Signed-off-by: Ian Chen <[email protected]>

Author: iche033

.github/workflows/bazel.yml

@@ -1,10 +1,7 @@
 name: Bazel CI
 on:
-  push:
-    branches:
-      - 'gz-sensors[1-9]?[0-9]'
-      - 'main'
   pull_request:
+  push:
     branches:
       - 'gz-sensors[1-9]?[0-9]'
       - 'main'