Astropy: Hardening Astropy's Core Stability (Jett Higgins)

[JettHiggins]

Requirements

• I've read OA contributor application guide;
• I confirm that this is my work and not made by LLMs;
• I've introduced myself to the sub-organisation I'm applying for;
• I've created a blog post and wrote something about the project I'm interested;
• I've contributed at least one patch to the sub-organisation I'm applying for and it's my work and not made by LLMs
  (Check for issues marked "easy" or "package-novice" in each organization. Don't be afraid to contact the development mailing list if you have questions or run into trouble setting up a development environment.):
  • TST: updating spectral conversion test astropy/astropy#19322
  • Updating bold titles to headings astropy/astropy#19238
  • TST: Adding test for parseheader astropy/astropy#19449