Cleanup Linux PR Unit Test (#2778)

.github/workflows/pr-unit-linux.yml

@@ -0,0 +1,42 @@
+name: Run unit tests (Linux)
+
+on:
+  pull_request:
+    branches:
+      - main
+      - current-release
+      - "*LTS"
+    types: [opened, synchronize, reopened, ready_for_review]
+
+jobs:
+  run_unit_tests:
+    name: Run unit tests on Python ${{ matrix.config.python-version }}
+    if: github.event.pull_request.draft == false
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: true
+      matrix:
+        config:
+          - { python-version: "3.8", tox-env: py38 }
+          - { python-version: "3.8", tox-env: py38-no-ext }
+          - { python-version: "3.9", tox-env: py39 }
+          - { python-version: "3.9", tox-env: py39-no-ext }
+          - { python-version: "3.10", tox-env: py310 }
+          - { python-version: "3.10", tox-env: py310-no-ext }
+          - { python-version: "3.11", tox-env: py311 }
+          - { python-version: "3.11", tox-env: py311-no-ext }
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Setup Python ${{ matrix.config.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.config.python-version }}
+
+      - name: Install tox
+        run: pip install tox
+
+      - name: Run unit tests
+        run: tox -e ${{ matrix.config.tox-env }}