ci: upgrade GitHub Actions and runner versions

Actions:
- actions/checkout v4 -> v6
- actions/cache v4 -> v5
- actions/setup-python v5 -> v6
- actions/setup-node v4 -> v6
- actions/upload-pages-artifact v3 -> v4
- actions/upload-artifact v4 -> v5
- actions/download-artifact v4 -> v5
- docker/setup-buildx-action v3 -> v4
- docker/setup-qemu-action v3 -> v4
- github/codeql-action v3 -> v4
- peter-evans/dockerhub-description v3 -> v5

Runners (quality-checks only):
- ubuntu-22.04 -> ubuntu-24.04
- windows-2022 -> windows-2025
- macos-13 -> macos-15

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: teh-hippo

.github/workflows/build-docs.yml

@@ -6,13 +6,13 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
-    - uses: docker/setup-buildx-action@v3
+    - uses: docker/setup-buildx-action@v4
       id: setup
 
     - name: Cache Build
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       id: cache
       with:
         # if the list or anything in these folders expected to change, then cache needs to be cleared and rebuilt, because it is keyed only by pyproject.toml hash
@@ -42,7 +42,7 @@ jobs:
           }
 
     - name: Build Doc
-      uses: docker/build-push-action@v6
+      uses: docker/build-push-action@v7
       with:
         push: false
         platforms: linux/arm64
@@ -57,7 +57,7 @@ jobs:
       uses: actions/configure-pages@v5
 
     - name: Upload artifact
-      uses: actions/upload-pages-artifact@v3
+      uses: actions/upload-pages-artifact@v4
       with:
         path: docs/_build/html/