ci: Update action versions

Author: a.b.christie

.github/workflows/build.yaml

@@ -37,9 +37,9 @@ jobs:
         - '3.13'
     steps:
     - name: Checkout
-      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 }}
     - name: Install requirements

.github/workflows/publish.yaml

@@ -31,11 +31,11 @@ jobs:
       id-token: write  # IMPORTANT: this permission is mandatory for trusted publishing
     steps:
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
     - name: Inject slug/short variables
-      uses: rlespinasse/github-slug-action@v4
+      uses: rlespinasse/github-slug-action@v5
     - name: Set up Python
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v6
       with:
         python-version: '3.12'
     - name: Install dependencies