Bump nicegui from 1.4.1 to 2.9.1 in /.requirements

Bumps [nicegui](https://github.com/zauberzeug/nicegui) from 1.4.1 to 2.9.1.
- [Release notes](https://github.com/zauberzeug/nicegui/releases)
- [Changelog](https://github.com/zauberzeug/nicegui/blob/main/release.dockerfile)
- [Commits](zauberzeug/nicegui@v1.4.1...v2.9.1)

---
updated-dependencies:
- dependency-name: nicegui
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

.requirements/requirements.txt

@@ -93,7 +93,7 @@ multidict==6.0.4 ; python_version >= "3.10" and python_version < "4.0"
 multitasking==0.0.11 ; python_version >= "3.10" and python_version < "4.0"
 myllm==3.1.50 ; python_version >= "3.10" and python_version < "4.0"
 nest-asyncio==1.5.8 ; python_version >= "3.10" and python_version < "4.0"
-nicegui==1.4.1 ; python_version >= "3.10" and python_version < "4.0"
+nicegui==2.9.1 ; python_version >= "3.10" and python_version < "4.0"
 numpy==1.25.2 ; python_version >= "3.10" and python_version < "4.0"
 oauthlib==3.2.2 ; python_version >= "3.10" and python_version < "4.0"
 orjson==3.9.10 ; python_version >= "3.10" and python_version < "4.0" and (platform_machine != "i386" and platform_machine != "i686")