dump julia 1.9.0 testing in ci

Author: ablaom

.github/workflows/ci.yml

@@ -19,7 +19,6 @@ jobs:
         version:
           - '1.6'
           - '1' # automatically expands to the latest stable 1.x release of Julia.
-          - '~1.9.0-0'
         os:
           - ubuntu-latest
         arch: