CI: Update GitHub Actions

Update actions to use Node.js 24:
- https://github.com/actions/checkout
- https://github.com/actions/setup-python

Fix a bug:
- https://github.com/actions/download-artifact

Author: DimitriPapadopoulos

.github/workflows/publish.yaml

@@ -9,14 +9,14 @@ jobs:
     name: Build distribution package
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           persist-credentials: false
       - name: Fetch tags
         if: github.ref_type != 'tag'
         run: git fetch --prune --unshallow --tags
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.x"
       - name: Install pypa/build
@@ -50,7 +50,7 @@ jobs:
       id-token: write
     steps:
       - name: Download all the dists
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           name: python-package-distributions
           path: dist/
@@ -71,7 +71,7 @@ jobs:
       id-token: write
     steps:
       - name: Download all the dists
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           name: python-package-distributions
           path: dist/
@@ -87,7 +87,7 @@ jobs:
       id-token: write
     steps:
       - name: Download all the dists
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           name: python-package-distributions
           path: dist/

.github/workflows/tests.yaml

@@ -17,9 +17,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.x"
       - run:
@@ -51,9 +51,9 @@ jobs:
           - '3.14'
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
           allow-prereleases: true  # needed for 3.14