Change minimum supported Julia from 1.3 to 1.5

Author: BioTurboNick

.github/workflows/ci.yml

@@ -14,7 +14,7 @@ jobs:
       fail-fast: false
       matrix:
         version:
-          - "1.3"
+          - "1.5"
           - "1"
           - "nightly"
         os: