Attempt to narrow down on the version of Python 3.10.x where unit tes…

…t failure noted at #628 (comment) bug could have been introduced

Attempted reading and comparing the 3.10.x and 3.11.x changelogs since the failure affects both lineages of Python, but that hasn't produced any definitive answers yet

.github/workflows/unittests.yaml

@@ -12,15 +12,8 @@ jobs:
   test:
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11.0-rc.1"]
-        exclude:
-          - os: macos-latest
-            python-version: "3.10"
-          - os: macos-latest
-            python-version: "3.11.0-rc.1"
-          - os: windows-latest
-            python-version: "3.11.0-rc.1"
+        os: [macos-latest]
+        python-version: ["3.10.0", "3.10.3", "3.10.7"]
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3