Workflow permissions

Author: arvkevi

.github/workflows/tests.yml

@@ -12,17 +12,21 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.8", "3.9", "3.10", "3.11"]
         os: [ubuntu-latest, macos-latest, windows-latest]
         exclude:  # Python < v3.8 does not support Apple Silicon ARM64.
         - python-version: "3.7"
           os: macos-latest
+        - python-version: "3.7"
+          os: ubuntu-latest
         include:  # So run those legacy versions on Intel CPUs.
         - python-version: "3.7"
           os: macos-13
+        - python-version: "3.7"
+          os: windows-latest
     env:
       OS: ${{ matrix.os }}
-      PYHTHON: ${{ matrix.python-version }}
+      PYTHON: ${{ matrix.python-version }}
     steps:
       - uses: actions/checkout@v3
       - name: Set up Python ${{ matrix.python-version }}