Advance to next version of ubuntu

Author: atalman

.github/workflows/update-quick-start-module.yml

@@ -63,7 +63,7 @@ jobs:
   update-quick-start:
     needs: [linux-nightly-matrix, windows-nightly-matrix, macos-nightly-matrix,
       linux-release-matrix, windows-release-matrix, macos-release-matrix]
-    runs-on: "ubuntu-18.04"
+    runs-on: "ubuntu-20.04"
     steps:
       - name: Checkout builder
         uses: actions/checkout@v2