Update test_sciml.yml

Author: ChrisRackauckas

.buildkite/test_sciml.yml

@@ -2,7 +2,7 @@ steps:
   - label: ":julia: Run tests on LTS"
     plugins:
       - JuliaCI/julia#v1:
-          version: 1.10
+          version: '1.10'
       - JuliaCI/julia-test#v1:
     timeout_in_minutes: 20
     artifact_paths: