Test on py3.11; update GHA; test with latest numpy

.github/workflows/omv-ci.yml

@@ -13,14 +13,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ "3.9",  "3.10" ] # Brian no longer supported on py3.8
+        python-version: [ "3.9",  "3.10",  "3.11" ] # Brian no longer supported on py3.8
         engine: [ jNeuroML, jNeuroML_NEURON, jNeuroML_PyNN_NEURON, jNeuroML_validate, PyNN_NEURON, PyNN_Nest, PyNN_NeuroML, PyNN_Brian2]
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Set up Python  ${{ matrix.python-version }}
-      uses: actions/setup-python@v3
+      uses: actions/setup-python@v5
       with:
         python-version:  ${{ matrix.python-version }}
 
@@ -32,7 +32,7 @@ jobs:
       run: |
         pip install scipy sympy matplotlib cython tables
                   
-        pip install 'numpy<=1.23.0' # see https://github.com/OpenSourceBrain/osb-model-validation/issues/91
+        # pip install 'numpy<=1.23.0' # see https://github.com/OpenSourceBrain/osb-model-validation/issues/91
 
         
     - name: Run OMV tests on engine ${{ matrix.engine }}