Updated workflow to test all versions we say we do

.github/workflows/ci.yml

@@ -4,30 +4,23 @@
 name: pynmea2
 on:
   push:
-    branches: ["master"]
+    branches: ["master", "py3v12-compatability"]
   pull_request:
     branches: ["master"]
 
 jobs:
   test:
-    runs-on: ${{ matrix.os }}
+    runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
-       python: ["3"]
-       os: ["ubuntu-latest"]
-       include:
-          - {python: "3.8", os: "ubuntu-22.04"}
-          - {python: "3.9", os: "ubuntu-22.04"}
-          - {python: "3.10", os: "ubuntu-22.04"}
-          - {python: "3.11", os: "ubuntu-22.04"}
-          - {python: "3.12", os: "ubuntu-22.04"}
+       python-version: ["2.7", "3.4", "3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
     steps:
-    - uses: actions/checkout@v3
-    - name: Set up Python ${{ matrix.python }}
-      uses: actions/setup-python@v3
+    - uses: actions/checkout@v4
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v4
       with:
-        python-version: ${{ matrix.python }}
+        python-version: ${{ matrix.python-version }}
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip