Update the list of versions that are tested

Author: IanLee1521

.github/workflows/main.yml

@@ -12,18 +12,13 @@ jobs:
         os:
           - ubuntu-latest
         python-version:
-          - "3.7"
           - "3.8"
           - "3.9"
           - "3.10"
           - "3.11"
-          - pypy3.6
-          - pypy3.7
-          - pypy3.8
-          - pypy3.9
-        include:
-          - os: ubuntu-20.04
-            python-version: "3.6"
+          - "3.12"
+          - "3.13"
+          - "3.14"
     name: Python ${{ matrix.python-version }} Tests
     steps:
       - uses: actions/checkout@v3