Update CI to test on Julia 1, lts, and pre versions

Add 'lts' and 'pre' version testing to align with SciML ecosystem
standards and ensure compatibility across all supported Julia versions.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: claude

.github/workflows/ci.yml

@@ -11,6 +11,8 @@ jobs:
       matrix:
         version:
           - '1'
+          - 'lts'
+          - 'pre'
         os:
           - ubuntu-latest
           - macOS-latest