Build: upgrade dependencies, including eslint 9.4.0 and uglify 3.7.7

Build: upgrade dependencies, including eslint 9.4.0 and uglify 3.7.7

- Sinon is already at the latest version that supports IE9.
- Upgraded uglify to 3.7.7, which is the latest that worked with IE9.
  I tried 3.9.4, which we are using in jquery-migrate, and 3.8.1,
  but there were failures in traversing ("Permission denied" errors).
- Upgraded eslint to version 9, which required some changes.
  Mainly, unused arguments in catch expressions error by default in 9+.
  The config now makes use of `caughtErrorsIgnorePattern`,
  which is set to `"^_"`, the same as unused function params.
- Ignored main branch dist files when switching branches.

Closes gh-5508