Update test_sciml.yml

Author: ChrisRackauckas

.buildkite/test_sciml.yml

@@ -1,8 +1,8 @@
 steps:
-  - label: ":julia: Run tests on 1.8"
+  - label: ":julia: Run tests on LTS"
     plugins:
       - JuliaCI/julia#v1:
-          version: 1.9
+          version: 1.10
       - JuliaCI/julia-test#v1:
     timeout_in_minutes: 20
     artifact_paths: