CI: Update SITE_ID_TOKEN to asc-git.lanl.gov

[rbberger]

PR Summary

Use more generic hostname

PR Checklist

• [ ] Code is formatted. (You can use the format_spiner make target.)
• [ ] Adds a test for any bugs fixed. Adds tests for new features.
• [ ] If preparing for a new release, update the version in cmake.

[ktsai7]

LGTM. @ktsai7 is there any reason this would cause problems?

No problems. I was the one requested for it anyway :)