✏️ Update GitHub actions for main branch only

.github/workflows/push_pypi.yml

@@ -1,37 +1,12 @@
 name: Publish to PyPI
 
 on:
-  release:
-    types: [created]
-  pull_request:
-    types: [opened, synchronize]
+  push:
+    branches:
+      - main
 
 jobs:
-  build:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      - name: Set up Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: 3.9
-
-      - name: Install Poetry
-        run: |
-          curl -sSL https://install.python-poetry.org | python -
-          poetry config pypi-token.pypi ${{ secrets.PYPI_API_TOKEN }}
-
-      - name: Install dependencies
-        run: poetry install --no-root --no-dev
-
-      - name: Build
-        run: poetry build
-
   publish:
-    if: github.event_name == 'release'
-    needs: build
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code