Merge branch 'pyocc-update' of github.com:mathLab/BladeX into pyocc-update

Author: gortali

.github/workflows/testing_pr.yml

@@ -13,14 +13,14 @@ jobs:
       fail-fast: false
       matrix:
         os: [windows-latest, macos-latest, ubuntu-latest]
-        python-version: [3.7, 3.8]
+        python-version: [3.8, 3.9]
 
     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 }}