change ci julia 1.0 -> 1.3

Author: ablaom

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
       fail-fast: false
       matrix:
         version:
-          - '1.0'
+          - '1.3'
           - '1' # automatically expands to the latest stable 1.x release of Julia.
         os:
           - ubuntu-latest