ci(docs,tests) @actions/checkout v5 -> v6

See also: https://github.com/actions/checkout/releases/tag/v6.0.0

Author: tony

.github/workflows/docs.yml

@@ -12,7 +12,7 @@ jobs:
       matrix:
         python-version: ['3.14']
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Filter changed file paths to outputs
         uses: dorny/paths-filter@v3.0.2

.github/workflows/tests.yml

@@ -17,7 +17,7 @@ jobs:
           - python-version: '3.14'
             pytest-version: '7'
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Install uv
         uses: astral-sh/setup-uv@v7
@@ -65,7 +65,7 @@ jobs:
         python-version: ['3.14']
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Install uv
         uses: astral-sh/setup-uv@v7