ci: update actions/upload-artifact to v4 with merge (#3545)

.github/workflows/ci.yml

@@ -70,11 +70,14 @@ jobs:
  # This will also trigger "make dist" that creates the Python packages
  make aws-lambda-layer
  - name: Upload Python Packages
- uses: actions/upload-artifact@v3
+ uses: actions/upload-artifact@v4
  with:
- name: ${{ github.sha }}
+ name: artifact-build_lambda_layer
  path: |
  dist/*
+ if-no-files-found: 'error'
+ # since this artifact will be merged, compression is not necessary
+ compression-level: '0'
 
  docs:
  name: Build SDK API Doc
@@ -91,7 +94,23 @@ jobs:
  make apidocs
  cd docs/_build && zip -r gh-pages ./
 
- - uses: actions/upload-artifact@v3.1.1
+ - uses: actions/upload-artifact@v4
+ with:
+ name: artifact-docs
+ path: |
+ docs/_build/gh-pages.zip
+ if-no-files-found: 'error'
+ # since this artifact will be merged, compression is not necessary
+ compression-level: '0'
+
+ merge:
+ name: Create Release Artifact
+ runs-on: ubuntu-latest
+ needs: [build_lambda_layer, docs]
+ steps:
+ - uses: actions/upload-artifact/merge@v4
  with:
+ # Craft expects release assets from github to be a single artifact named after the sha.
  name: ${{ github.sha }}
- path: docs/_build/gh-pages.zip
+ pattern: artifact-*
+ delete-merged: true