Bump actions/download-artifact from 5 to 6

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 5 to 6.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v5...v6)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/cd.yml

@@ -82,7 +82,7 @@ jobs:
         egress-policy: audit
 
     - name: Download wheel artifacts
-      uses: actions/download-artifact@v5
+      uses: actions/download-artifact@v6
       with:
         path: dist
         pattern: wheel-*
@@ -122,7 +122,7 @@ jobs:
         egress-policy: audit
 
     - name: Download wheel artifacts
-      uses: actions/download-artifact@v5
+      uses: actions/download-artifact@v6
       with:
         path: dist
         pattern: wheel-*
@@ -156,7 +156,7 @@ jobs:
         egress-policy: audit
 
     - name: Download wheel artifacts
-      uses: actions/download-artifact@v5
+      uses: actions/download-artifact@v6
       with:
         path: dist
         pattern: wheel-*

.github/workflows/ci.yml

@@ -115,7 +115,7 @@ jobs:
     - uses: step-security/harden-runner@v2
       with:
         egress-policy: audit
-    - uses: actions/download-artifact@v5
+    - uses: actions/download-artifact@v6
       with:
         path: wheelhouse
         pattern: wheel-*