remove PR and push triggers from release.yml

.github/workflows/release.yml

@@ -1,9 +1,6 @@
 name: Release
 
 on:
-  push:
-    branches: [main]
-  pull_request:
   release:
     types: [published]
   workflow_dispatch:
@@ -23,7 +20,6 @@ jobs:
     name: Build source distribution
     needs: tests
     runs-on: ubuntu-latest
-    if: github.event_name == 'release' || (github.event_name == 'workflow_dispatch' && inputs.task == 'release')
     steps:
       - name: Check out repo
         uses: actions/checkout@v4
@@ -45,7 +41,6 @@ jobs:
   build_wheels:
     name: Build wheels for Python ${{ matrix.python-version }} on ${{ matrix.os }}
     needs: tests
-    if: github.event_name == 'release' || (github.event_name == 'workflow_dispatch' && inputs.task == 'release')
     strategy:
       matrix:
         os: [ubuntu-latest, macos-14, windows-latest]
@@ -85,4 +80,6 @@ jobs:
         with:
           skip-existing: true
           verbose: true
+          # set the repository URL to the test PyPI repository if the task is 'test-release'
+          # else empty string defaults to production PyPI
           repository-url: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.task == 'test-release' && 'https://test.pypi.org/legacy/' || '' }}