update test workflow

Author: ctb

.github/workflows/test.yml

@@ -8,7 +8,7 @@ jobs:
 
     strategy:
       matrix:
-        python: [3.7]
+        python: [3.12]
 
     name: Python ${{ matrix.python }}
 
@@ -29,9 +29,6 @@ jobs:
       - name: Install coverage dependencies
         run: pip install pytest-cov
 
-      - name: Build
-        run: python setup.py build_ext --inplace
-
       - name: Install pybbhash
         run: pip install -e .