chore(deps): update github artifact actions to v4

Author: renovate[bot]

.github/workflows/build.yml

@@ -45,7 +45,7 @@ jobs:
           npm run package
           mv pyright-*.vsix ${{ env.VSIX_NAME }}
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: ${{ env.ARTIFACT_NAME_VSIX }}
           path: packages/vscode-pyright/${{ env.VSIX_NAME }}
@@ -58,7 +58,7 @@ jobs:
 
     steps:
       - name: Download artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           path: artifacts