Bump to setup-python v5

Author: timkpaine

setup/action.yml

@@ -20,13 +20,13 @@ runs:
   using: 'composite'
   steps:
     - name: Set up Python ${{ inputs.version }}
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ inputs.version }}
       if: ${{ inputs.uv == 'true' }}
 
     - name: Set up Python ${{ inputs.version }}
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ inputs.version }}
         cache: "pip"