build(deps): Bump actions/download-artifact in the actions group

Bumps the actions group with 1 update: [actions/download-artifact](https://github.com/actions/download-artifact).


Updates `actions/download-artifact` from 4.1.8 to 4.1.9
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@fa0a91b...cc20338)

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

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

.github/workflows/custom-test.yml

@@ -125,7 +125,7 @@ jobs:
         run: curl -o root.json ${METADATA_URL}/5.root.json
 
       - name: Download bundle to verify
-        uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16 # v4.1.8
+        uses: actions/download-artifact@cc203385981b70ca67e1cc392babf9cc229d5806 # v4.1.9
         with:
           name: bundle
 
@@ -154,7 +154,7 @@ jobs:
         run: curl -o root.json ${METADATA_URL}/1.root.json
 
       - name: Download bundle to verify
-        uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16 # v4.1.8
+        uses: actions/download-artifact@cc203385981b70ca67e1cc392babf9cc229d5806 # v4.1.9
         with:
           name: bundle
 
@@ -197,7 +197,7 @@ jobs:
           tar -xvf sigstore-cli/build/distributions/sigstore-cli-*.tar --strip-components 1
 
       - name: Download bundle to verify
-        uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16 # v4.1.8
+        uses: actions/download-artifact@cc203385981b70ca67e1cc392babf9cc229d5806 # v4.1.9
         with:
           name: bundle
 

.github/workflows/deploy-to-gcs.yml

@@ -12,7 +12,7 @@ jobs:
       id-token: 'write' # For authenticating with the GitHub workflow identity
 
     steps:
-      - uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16 # v4.1.8
+      - uses: actions/download-artifact@cc203385981b70ca67e1cc392babf9cc229d5806 # v4.1.9
         with:
           name: github-pages