Removed Custom Chaco Dependency.

General Description

This release removes the dependency on custom Chaco wheels for Python 3.12 users.
The updated Chaco wheels available from PyPi are now working fine.

What's Changed

• Replace pip with uv, for back-end infrastructure management. by @capn-freako in #181
• Bump pip from 25.3 to 26.0 by @dependabot[bot] in #182
• Clean-up, as part of attempting a (failed) fix to the AmiNode type … by @capn-freako in #184
• 185 Traitsui FileEditor Signature Change to List[str] by @jdpatt in #186
• Bump pillow from 12.1.0 to 12.1.1 by @dependabot[bot] in #188

Full Changelog: v9.1.8...v9.2.0