refactor: use internal stgpytools

Author: Tohrusky

.github/workflows/test.yml

@@ -44,8 +44,7 @@ jobs:
     strategy:
       matrix:
         os-version: ["ubuntu-22.04", "macos-14"]
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
-        #python-version: ["3.12"]
+        python-version: ["3.10", "3.11", "3.12"]
 
     runs-on: ${{ matrix.os-version }}
     steps: