fix(ci): prevent duplicate runs on PR updates (#1406)

Remove the push trigger from the PR Tests workflow to avoid duplicate
runs when a pull request is updated. The workflow will now only run on
pull_request events, ensuring a single execution per PR update.

Author: Pouyanpi

.github/workflows/pr-tests.yml

@@ -1,8 +1,6 @@
 name: PR Tests
 
 on:
-  push:
-
   pull_request:
     # we don't ignore markdkowns to run pre-commits
     paths-ignore: