fix potential issues

- Fix PR paths trigger: pack-pip.yml -> pack-pip.yaml
- Add python-version: '3.13' to setup-python step
- Move Set up Python and Set up UV before Build wheels
- Fix download-artifact v6

Author: bruno-at-orange

.github/workflows/pack-pip.yaml

@@ -17,7 +17,7 @@ on:
     tags: ['*']
   pull_request:
     paths:
-      - .github/workflows/pack-pip.yml
+      - .github/workflows/pack-pip.yaml
       - pyproject.toml
       - CMakeLists.txt
 
@@ -42,25 +42,27 @@ jobs:
       SIGN_WINDOWS_WHEELS: ${{ github.event_name == 'workflow_dispatch' && inputs.signature-activation }}
     steps:
       - uses: actions/checkout@v6
-      
-      - name: Load Visual C++ Environment Variables (Windows)
-        if: runner.os == 'Windows'
-        shell: cmd
-        run: |
-          call "C:\\Program Files\\Microsoft Visual Studio\\18\\Enterprise\\VC\\Auxiliary\\Build\\vcvars64.bat"
-          set >> %GITHUB_ENV%
-       
-      - name: Build wheels
-        uses: pypa/cibuildwheel@v3.3.1
 
       - name: Set up Python
         uses: actions/setup-python@v5
+        with:
+          python-version: '3.13'
 
       - name: Set up UV
         uses: astral-sh/setup-uv@v6
         with:
           enable-cache: true
 
+      - name: Load Visual C++ Environment Variables (Windows)
+        if: runner.os == 'Windows'
+        shell: cmd
+        run: |
+          call "C:\\Program Files\\Microsoft Visual Studio\\18\\Enterprise\\VC\\Auxiliary\\Build\\vcvars64.bat"
+          set >> %GITHUB_ENV%
+
+      - name: Build wheels
+        uses: pypa/cibuildwheel@v3.3.1
+
       - name: Test built wheel
         run: |
           uv venv .test-env
@@ -130,7 +132,7 @@ jobs:
     environment:
       name: testpypi
     steps:
-      - uses: actions/download-artifact@v6
+      - uses: actions/download-artifact@v7
         with:
           pattern: pkg-*
           path: dist
@@ -151,7 +153,7 @@ jobs:
     environment:
       name: pypi
     steps:
-      - uses: actions/download-artifact@v6
+      - uses: actions/download-artifact@v7
         with:
           pattern: pkg-*
           path: dist