CI: fix total parquet size calculation

Author: fedorov

.github/workflows/cd.yml

@@ -65,8 +65,8 @@ jobs:
           done
           echo "" >> $GITHUB_STEP_SUMMARY
           echo "### Total" >> $GITHUB_STEP_SUMMARY
-          du -sh release_artifacts/*.parquet | awk '{print "Total parquet size: " $1}'
-          du -sh release_artifacts/*.parquet | awk '{print "Total parquet size: " $1}' >> $GITHUB_STEP_SUMMARY
+          du -ch release_artifacts/*.parquet | tail -1 | awk '{print "Total parquet size: " $1}'
+          du -ch release_artifacts/*.parquet | tail -1 | awk '{print "Total parquet size: " $1}' >> $GITHUB_STEP_SUMMARY
 
       - name: Upload index artifacts
         uses: actions/upload-artifact@v4