ci: update GitHub Actions to Node 22 (fix deprecation warnings)

- actions/checkout v4 → v5
- actions/setup-python v5 → v6
- astral-sh/setup-uv v4 → v6 (docs.yaml, was already v6 elsewhere)
- actions/upload-pages-artifact v3 → v4
- actions/deploy-pages v4 → v5

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: jensens

.github/workflows/docs.yaml

@@ -22,13 +22,13 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: "3.13"
 
-      - uses: astral-sh/setup-uv@v4
+      - uses: astral-sh/setup-uv@v6
 
       - name: Install docs dependencies
         working-directory: docs
@@ -42,7 +42,7 @@ jobs:
         working-directory: docs
         run: .venv/bin/sphinx-build sources html
 
-      - uses: actions/upload-pages-artifact@v3
+      - uses: actions/upload-pages-artifact@v4
         with:
           path: docs/html
 
@@ -55,4 +55,4 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v4
+        uses: actions/deploy-pages@v5

.github/workflows/qa.yaml

@@ -12,7 +12,7 @@ jobs:
     name: Ruff
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - uses: astral-sh/setup-uv@v6
 

.github/workflows/release.yaml

@@ -30,7 +30,7 @@ jobs:
       contents: read
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
           persist-credentials: false

.github/workflows/tests.yaml

@@ -35,7 +35,7 @@ jobs:
       ZODB_TEST_DSN: "dbname=zodb_test user=zodb password=zodb host=localhost port=5432"
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
 
@@ -71,7 +71,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - uses: astral-sh/setup-uv@v6
         with: