Update python version in CI (3.8 -> 3.13)

Author: brichet

.github/workflows/build.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v4
         with:
-          python-version: '3.8'
+          python-version: '3.13'
           architecture: 'x64'
 
       - name: Cache pip on Linux

.github/workflows/devinstall.yml

@@ -15,7 +15,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v4
         with:
-          python-version: '3.8'
+          python-version: '3.13'
           architecture: 'x64'
       - name: Cache pip on Linux
         uses: actions/cache@v3

.github/workflows/lint.yml

@@ -13,7 +13,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v4
         with:
-          python-version: '3.8'
+          python-version: '3.13'
           architecture: 'x64'
 
       - name: Install dependencies

.github/workflows/packaging.yml

@@ -24,7 +24,7 @@ jobs:
       - name: Install Python
         uses: actions/setup-python@v4
         with:
-          python-version: '3.11'
+          python-version: '3.13'
           architecture: 'x64'
 
       - uses: actions/cache@v3
@@ -83,16 +83,16 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu, windows]
-        python: ['3.7', '3.10']
+        python: ['3.8', '3.13']
         dist: ['ipywidgets*.tar.gz']
         include:
-          - python: '3.10'
+          - python: '3.13'
             dist: 'jupyterlab_widgets*.tar.gz'
             os: 'ubuntu'
-          - python: '3.10'
+          - python: '3.13'
             dist: 'widgetsnbextension*.tar.gz'
             os: 'ubuntu'
-          - python: '3.10'
+          - python: '3.13'
             dist: 'ipywidgets*.whl'
             os: 'ubuntu'
     steps:

.github/workflows/tests.yml

@@ -11,7 +11,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: 3.8
+          python-version: '3.13'
           cache: 'pip'
           cache-dependency-path: |
             **/setup.cfg
@@ -77,7 +77,7 @@ jobs:
     strategy:
       max-parallel: 4
       matrix:
-        python-version: ['3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
 
     steps:
       - uses: actions/checkout@v4
@@ -135,7 +135,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: '3.11'
+          python-version: '3.13'
           cache: 'pip'
           cache-dependency-path: |
             **/setup.cfg