chore(deps): bump actions/download-artifact from 4.1.5 to 4.1.6 (#4178)

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 4.1.5 to 4.1.6.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@8caf195...9c19ed7)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/publish_v2_layer.yml

@@ -258,7 +258,7 @@ jobs:
           artifact_name: ${{ inputs.source_code_artifact_name }}
 
       - name: Download CDK layer artifacts
-        uses: actions/download-artifact@8caf195ad4b1dee92908e23f56eeb0696f1dd42d # v4.1.5
+        uses: actions/download-artifact@9c19ed7fe5d278cd354c7dfd5d3b88589c7e2395 # v4.1.6
         with:
           path: cdk-layer-stack
           pattern: cdk-layer-stack-*  # merge all Layer artifacts created per region earlier (reusable_deploy_v2_layer_stack.yml; step "Save Layer ARN artifact")

.github/workflows/reusable_deploy_v2_layer_stack.yml

@@ -180,7 +180,7 @@ jobs:
       - name: install deps
         run: poetry install
       - name: Download artifact
-        uses: actions/download-artifact@8caf195ad4b1dee92908e23f56eeb0696f1dd42d # v4.1.5
+        uses: actions/download-artifact@9c19ed7fe5d278cd354c7dfd5d3b88589c7e2395 # v4.1.6
         with:
           name: ${{ inputs.artefact-name }}
           path: layer

.github/workflows/reusable_deploy_v2_sar.yml

@@ -115,7 +115,7 @@ jobs:
         with:
           node-version: ${{ env.NODE_VERSION }}
       - name: Download artifact
-        uses: actions/download-artifact@8caf195ad4b1dee92908e23f56eeb0696f1dd42d # v4.1.5
+        uses: actions/download-artifact@9c19ed7fe5d278cd354c7dfd5d3b88589c7e2395 # v4.1.6
         with:
           name: ${{ inputs.artefact-name }}
       - name: Unzip artefact