Bump actions/download-artifact from 6.0.0 to 7.0.0

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 6.0.0 to 7.0.0.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v6.0.0...v7.0.0)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: 7.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/ab-testing-ci.yml

@@ -125,19 +125,19 @@ jobs:
         uses: ./.github/actions/setup-node-env
 
       - name: Fetch config build
-        uses: actions/download-artifact@v6.0.0
+        uses: actions/download-artifact@v7.0.0
         with:
           name: ab-testing-build
           path: ab-testing/config/dist
 
       - name: Fetch UI build
-        uses: actions/download-artifact@v6.0.0
+        uses: actions/download-artifact@v7.0.0
         with:
           name: ui-build
           path: ab-testing/frontend/output/ab-tests.html
 
       - name: Fetch Lambda build
-        uses: actions/download-artifact@v6.0.0
+        uses: actions/download-artifact@v7.0.0
         with:
           name: ab-testing-lambda-build
           path: ab-testing/deploy-lambda/dist/lambda.zip