Bump actions/upload-artifact from 4 to 5 in /.github/workflows

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

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

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

Author: dependabot[bot]

.github/workflows/build-api-lambda.yml

@@ -36,7 +36,7 @@ jobs:
           stat "${BINARY_PATH}"
       - name: Archive artifact
         id: upload-artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: api-lambda-binary
           retention-days: 1

.github/workflows/build-link-index-updater-lambda.yml

@@ -33,7 +33,7 @@ jobs:
           stat "${BINARY_PATH}"
       - name: Archive artifact
         id: upload-artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: link-index-updater-lambda-binary
           retention-days: 1