adjusted supported python versions in github tests

Author: tbanze

.github/workflows/github_test_action.yml

@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.9', '3.10', '3.11', '3.12']
+        python-version: ['3.10', '3.11', '3.12', '3.13']
         # Reminder: when removing support of an old python version here, then don't forget to remove
         # it also in pyproject.toml 'requires-python'
     steps:
@@ -37,16 +37,16 @@ jobs:
       run: |
         python -m pip list
     - name: Test with pytest
-      if: ${{ matrix.python-version != '3.9' }}
+      if: ${{ matrix.python-version != '3.10' }}
       run: |
         pytest
     - name: Test with pytest and Codecov
-      if: ${{ matrix.python-version == '3.9' }}
+      if: ${{ matrix.python-version == '3.10' }}
       run: |
         pip install pytest-cov
         pytest --cov=./ --cov-report=xml
     - name: Upload coverage to Codecov
-      if: ${{ matrix.python-version == '3.9' }}
+      if: ${{ matrix.python-version == '3.10' }}
       uses: codecov/codecov-action@v1
       with:
         verbose: true
@@ -80,7 +80,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: '3.11'
+          python-version: '3.12'
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip

.github/workflows/test_release.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        python-version: ['3.9', '3.10', '3.11', '3.12']
+        python-version: ['3.10', '3.11', '3.12', '3.13']
         os:  [ ubuntu-latest, windows-latest ]
 
     steps:
@@ -38,15 +38,15 @@ jobs:
       - name: Install specific dependencies (Windows)
         if: matrix.os  == 'windows-latest'
         run: |
-          if ( '${{ matrix.python-version }}'  -eq '3.9' ) { python -m pip install pypower }
-          if ( '${{ matrix.python-version }}'  -ne '3.9' ) { python -m pip install numba }
+          if ( '${{ matrix.python-version }}'  -eq '3.10' ) { python -m pip install pypower }
+          if ( '${{ matrix.python-version }}'  -ne '3.10' ) { python -m pip install numba }
           if ( '${{ matrix.python-version }}'  -eq '3.10' ) { python -m pip install lightsim2grid }
 
       - name: Install specific dependencies (Ubuntu)
         if: matrix.os  == 'ubuntu-latest'
         run: |
-          if ${{ matrix.python-version == '3.9' }}; then python -m pip install pypower; fi
-          if ${{ matrix.python-version != '3.9' }}; then python -m pip install numba; fi
+          if ${{ matrix.python-version == '3.10' }}; then python -m pip install pypower; fi
+          if ${{ matrix.python-version != '3.10' }}; then python -m pip install numba; fi
           if ${{ matrix.python-version == '3.10' }}; then python -m pip install lightsim2grid; fi
 
       - name: List all installed packages