Remove macos python 3.7 check - no longer available

Author: samuelhwilliams

.github/workflows/test.yml

@@ -14,6 +14,9 @@ jobs:
       matrix:
         os: [ubuntu-20.04, windows-latest, macos-latest]
         python-version: [3.7, 3.8, 3.9, "3.10"]
+        exclude:
+          - os: macos-latest
+            python-version: 3.7
 
     steps:
       - name: Checkout repository