Update to v4 versions with multiple artifact download (#1268)

Author: lukasIO

.github/workflows/build-package.yml

@@ -47,7 +47,7 @@ jobs:
         run: python -m build
 
       - name: Upload distribution package
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ inputs.artifact_name }}
           path: "${{ startsWith(inputs.package, 'livekit-plugin') && 'livekit-plugins/' || '' }}${{ inputs.package }}/dist/"
@@ -82,7 +82,7 @@ jobs:
           CIBW_BUILD_VERBOSITY: 3
 
       - name: Upload distribution package
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ inputs.artifact_name }}
           path: livekit-plugins/livekit-plugins-browser/dist/

.github/workflows/publish-package.yml

@@ -27,7 +27,7 @@ jobs:
           submodules: true
           lfs: true
         env:
-          GITHUB_TOKEN: ${{ secrets.CHANGESETS_PUSH_PAT }}
+          GITHUB_TOKEN: ${{ secrets.CHANGESETS_PUSH_DEPLOY_KEY }}
 
       - uses: pnpm/action-setup@v4
       - name: Use Node.js 20
@@ -84,7 +84,7 @@ jobs:
     uses: livekit/agents/.github/workflows/build-package.yml@main
     with:
       package: ${{ matrix.package.name }}
-      artifact_name: python-package-distributions
+      artifact_name: python-package-dist-${{matrix.package.name}}
 
   publish:
     needs:
@@ -96,10 +96,11 @@ jobs:
 
     steps:
       - name: Download all the dists
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
-          name: python-package-distributions
-          path: dist/
+          path: dist
+          pattern: python-package-dist-*
+          merge-multiple: true
 
       - name: Publish package
         uses: pypa/gh-action-pypi-publish@27b31702a0e7fc50959f5ad993c78deac1bdfc29