actions to v4 & py11 & py12

.github/workflows/unit-tests.yaml

@@ -1,20 +1,20 @@
 name: build
 on:
   push:
-    branches: master
+    branches: main
   pull_request:
-    branches: master
+    branches: main
 jobs:
   test:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.7", "3.8", "3.9", "3.10"]
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
     name: Python ${{ matrix.python-version}}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Set up Python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version}}
       - name: Install dependencies