chore(deps): bump the github-actions group with 2 updates

Bumps the github-actions group with 2 updates: [actions/upload-artifact](https://github.com/actions/upload-artifact) and [actions/download-artifact](https://github.com/actions/download-artifact).


Updates `actions/upload-artifact` from 4 to 5
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4...v5)

Updates `actions/download-artifact` from 4 to 6
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v4...v6)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
- dependency-name: actions/download-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
...

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

Author: dependabot[bot]

.github/workflows/release.yaml

@@ -90,7 +90,7 @@ jobs:
           tar -czvf bin/kepler-${VERSION}.linux-amd64.tar.gz bin/kepler
 
       - name: Upload Release Artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: release-artifacts
           retention-days: 1 # Keep the artifacts for 1 day
@@ -121,7 +121,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Download Release Artifacts
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v6
         with:
           name: release-artifacts