Give build an absurdly long timeout.

[timcosgrove]

Summary

• increases the timeout of the build step. This has been hitting its timeout limit recently.

This is a second attempt and it raises the timeout to an absurdly high level.

Related issue(s)

https://github.com/department-of-veterans-affairs/va.gov-cms/issues/18362

Testing done

There is no testing to do; it raises the limit.