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@018cc2c...37930b1)

---
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/ftl-build.yml

@@ -159,7 +159,7 @@ jobs:
         uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 #v6.0.1
       -
         name: Download digests
-        uses: actions/download-artifact@018cc2cf5baa6db3ef3c5f8a56943fffe632ef53 #v6.0.0
+        uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131 #v7.0.0
         with:
           path: /tmp/digests
           pattern: digests-*