chore(deps): update github artifact actions

Author: renovate[bot]

.github/workflows/ci.yaml

@@ -119,7 +119,7 @@ jobs:
         run: hatch build
 
       - name: Upload Sdist and Wheel to GitHub
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: dist
           path: "dist/*"
@@ -156,7 +156,7 @@ jobs:
         uses: actions/checkout@v5
 
       - name: Download Wheel from GitHub
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: dist
           pattern: '*.whl'
@@ -184,7 +184,7 @@ jobs:
         run: bin/crossplane xpkg build --package-file=${{ matrix.arch }}.xpkg --package-root=package/ --embed-runtime-image-tarball=runtime-${{ matrix.arch }}.tar
 
       - name: Upload Single-Platform Package
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: package-${{ matrix.arch }}
           path: "*.xpkg"
@@ -199,7 +199,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Download Sdist and Wheel from GitHub
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: dist
           path: dist
@@ -230,7 +230,7 @@ jobs:
         uses: actions/checkout@v5
 
       - name: Download Single-Platform Packages
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v6
         with:
           # See https://github.com/docker/build-push-action/blob/263435/README.md#summaries
           pattern: "!*.dockerbuild"