To celebrate Total Solar Eclipse 2024, we are now testing the upcoming 1.14.4 release on Solaris 11.4 as Oracle announced its support until 2037:
Long live Solaris 11! - Until at least 2034 to be exact (oracle.com)
Oracle quietly extends Solaris 11.4 support until 2037 • The Register
All tests passed so far 
!
If you want to know how to test Solaris 11.4 using GitHub Actions,
please take a look at how we did in CMake and Autotools.