fix node js version

.github/workflows/testactivities.yml

@@ -8,15 +8,17 @@ on:
 
 jobs:
   build:
-
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [3.9, '3.10', '3.11']
 
     steps:
-    - uses: actions/checkout@v2
-    - name: Set up Python 3.8
-      uses: actions/setup-python@v2
+    - uses: actions/checkout@v4
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v5
       with:
-        python-version: 3.8
+        python-version: ${{ matrix.python-version }}
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip setuptools
@@ -26,4 +28,4 @@ jobs:
         python tests/jsonParser.py
     - name: Test with pyshacl
       run: |
-        reproschema -l DEBUG validate activities
+        reproschema -l DEBUG validate activities