Bump all uses: to the latest.

Author: sobomax

.github/workflows/build_and_test.yml

@@ -48,10 +48,10 @@ jobs:
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
     # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v6
       with:
         python-version: ${{ matrix.python-version }}
 
@@ -95,17 +95,17 @@ jobs:
       contents: read
       id-token: write
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: Download all wheel artifacts
-      uses: actions/download-artifact@v4
+      uses: actions/download-artifact@v8
       with:
         path: dist
         pattern: 'dist-*'
         merge-multiple: true
 
     - name: Set up Python
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v6
       with:
         python-version: '3.x'