GitHub Actions: Python versions must not be quoted (#165)

* update tox configuration
* install GNU gettext

---------

Co-authored-by: Chris Adams <[email protected]>

Author: cclauss

.github/workflows/tox.yml

@@ -2,24 +2,18 @@ name: tox
 on: [push, pull_request]
 jobs:
   tox:
-    strategy:
-      fail-fast: false
-      # max-parallel: 4
-      matrix:
-        os: [ubuntu-latest]  # [macos-latest, ubuntu-latest, windows-latest]
-        # python: ['3.7', '3.8', '3.9', '3.10', '3.11']  # '2.7' tests fail
-    runs-on: ${{ matrix.os }}
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-python@v4
         with:
           python-version: |
-            '3.7'
-            '3.8'
-            '3.9'
-            '3.10'
-            '3.11'
-          # python-version: ${{ matrix.python }}
+            3.7
+            3.8
+            3.9
+            3.10
+            3.11
+      - run: sudo apt-get install -qy gettext
       - run: pip install --upgrade pip
       - run: pip install tox
       - run: tox