hed-validator v3.15.4

This release revamps the internal error reporting by using a standard HED issue with the code internalError (HED code GENERIC_ERROR). This should help downstream users fix bugs.

The CI actions were also updated in a development-only fix.

What's Changed

• Update CI config by @happy5214 in #165
• Use BidsHedIssue and Issue for internal error reporting by @happy5214 in #164

Full Changelog: v3.15.3...v3.15.4