test 1.9 instead of 1.8

Author: mohamed-barakat

.github/workflows/Tests.yml

@@ -19,7 +19,7 @@ jobs:
       fail-fast: false
       matrix:
         julia-version:
-          - '1.8'
+          - '1.9'
           - 'nightly'
         julia-arch:
           - x64