Delete 3.7 from workflows

Author: tikhonp

.github/workflows/python-package.yml

@@ -16,7 +16,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ "3.7", "3.8", "3.9", "3.10" ]
+        python-version: [ "3.8", "3.9", "3.10" ]
 
     steps:
       - uses: actions/checkout@v3