chore: update build workflow to skip specific Python versions for macOS

Author: mliezun

.github/workflows/build-and-cache-libpq.yml

@@ -123,9 +123,8 @@ jobs:
 
       - name: Build wheels
         uses: pypa/[email protected]
-        with:
-          package-dir: psycopg_c
         env:
+          CIBW_SKIP: "cp31?t-*"
           CIBW_BUILD: cp313-macosx_${{matrix.arch}}
           CIBW_ARCHS_MACOS: ${{matrix.arch}}
           MACOSX_ARCHITECTURE: ${{matrix.arch}}