update syntax

Author: parthea

.github/workflows/tests.yaml

@@ -42,7 +42,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: "${DOCS_PYTHON}"
+          python-version: ${DOCS_PYTHON}
           cache: 'pip'
       - name: Install nox.
         run: python -m pip install nox
@@ -61,10 +61,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - name: Set up Python "${{ matrix.python }}"
+      - name: Set up Python ${{ matrix.python }}
         uses: actions/setup-python@v5
         with:
-          python-version: "${{ matrix.python }}"
+          python-version: ${{ matrix.python }}
           cache: 'pip'
       - name: Install nox.
         run: python -m pip install nox
@@ -75,7 +75,7 @@ jobs:
       # Run showcase tests on the lowest and highest supported runtimes
       matrix:
         # TODO(https://github.com/googleapis/gapic-generator-python/issues/2121) Remove `showcase_w_rest_async` target when async rest is GA.
-        python: ["${OLDEST_PYTHON}", "${NEWEST_STABLE_PYTHON}"]
+        python: [${OLDEST_PYTHON}, ${NEWEST_STABLE_PYTHON}]
         target: [showcase, showcase_w_rest_async]
         logging_scope: ["", "google"]
 
@@ -84,10 +84,10 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
-      - name: Set up Python "${{ matrix.python }}"
+      - name: Set up Python ${{ matrix.python }}
         uses: actions/setup-python@v5
         with:
-          python-version: "${{ matrix.python }}"
+          python-version: ${{ matrix.python }}
           cache: 'pip'
       - name: Install system dependencies.
         run: |
@@ -133,7 +133,7 @@ jobs:
       - name: Set up Python ${NEWEST_STABLE_PYTHON}
         uses: actions/setup-python@v5
         with:
-          python-version: "${NEWEST_STABLE_PYTHON}"
+          python-version: ${NEWEST_STABLE_PYTHON}
           cache: 'pip'
       - name: Copy mtls files
         run: cp tests/cert/mtls.* /tmp/workspace/tests/cert/