Bump actions/download-artifact from 4 to 7

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 4 to 7.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v4...v7)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/release-candidate.yml

@@ -216,7 +216,7 @@ jobs:
           terraform_version: $(grep '^terraform' .tool-versions | cut -f2 -d' ')
 
       - name: "Download lambda artifact"
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v7
         with:
           name: lambda-${{ needs.validate.outputs.dev_tag }}
           path: dist
@@ -317,7 +317,7 @@ jobs:
           terraform_version: $(grep '^terraform' .tool-versions | cut -f2 -d' ')
 
       - name: "Download lambda artifact"
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v7
         with:
           name: lambda-${{ needs.validate.outputs.dev_tag }}
           path: dist