Bump dash from 2.11.1 to 2.15.0

Bumps [dash](https://github.com/plotly/dash) from 2.11.1 to 2.15.0.
- [Release notes](https://github.com/plotly/dash/releases)
- [Changelog](https://github.com/plotly/dash/blob/dev/CHANGELOG.md)
- [Commits](plotly/dash@v2.11.1...v2.15.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -6,7 +6,7 @@ attrs==23.1.0
 certifi==2023.5.7
 charset-normalizer==3.2.0
 click==8.1.4
-dash==2.11.1
+dash==2.15.0
 dash-bootstrap-components==1.4.1
 dash-core-components==2.0.0
 dash-html-components==2.0.0