- fix pyc files and update pytest on github on push trigger

.github/workflows/regression.yml

@@ -1,15 +1,20 @@
 name: Open-Tamil Python package
 
-on: [push]
+on:
+  workflow_dispatch:
+  push:
+    branches: ["main"]
+  workflow_call:
+  pull_request:
+    branches:
+      - "main"
 
 jobs:
-  build:
-
+  test-student-project:
     runs-on: ubuntu-latest
     strategy:
       matrix:
         python-version: [3.8,3.9]
-
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python ${{ matrix.python-version }}