Update Build.yml

Author: sambitdash

.github/workflows/Build.yml

@@ -17,12 +17,15 @@ jobs:
         version:
           - '1.6'
           - '1' # automatically expands to the latest stable 1.x release of Julia
-          - nightly
         os:
           - ubuntu-latest
         arch:
           - x64
         include:
+          - os: ubuntu-latest
+            version: 'nightly'
+            experimental: true
+            arch: x64
           # test macOS and Windows with latest Julia only
           - os: macOS-latest
             arch: x64