ci: bump actions/download-artifact to v2

Author: srevinsaju

.github/workflows/build.yml

@@ -50,7 +50,7 @@ jobs:
 
     steps:
       - name: Download Artifacts
-        uses: actions/download-artifact@v1
+        uses: actions/download-artifact@v2
       - name: Inspect directory after downloading artifacts
         run: ls -alFR
       - name: Create release and upload artifacts