Revert "Do not run CI in PR twice (#2082)" (#2100)

This reverts commit 0cd2714.

Author: kounelisagis

.github/workflows/ci.yml

@@ -1,11 +1,6 @@
 name: TileDB Python CI
 
-on: 
-  push:
-    branches: [dev]
-  pull_request:
-    branches: [dev]
-  workflow_dispatch:
+on: [push, pull_request, workflow_dispatch]
 
 concurrency:
   group: ${{ github.head_ref || github.run_id }}