Update polars requirement from ~=1.39.0 to ~=1.39.2

Updates the requirements on [polars](https://github.com/pola-rs/polars) to permit the latest version.
- [Release notes](https://github.com/pola-rs/polars/releases)
- [Commits](pola-rs/polars@py-1.39.0...py-1.39.2)

---
updated-dependencies:
- dependency-name: polars
  dependency-version: 1.39.2
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -1,7 +1,7 @@
 # Latest version of plotly can be found at https://github.com/plotly/plotly.py/releases .
 # Version is hardcoded to ensure uniformity no matter the platform.
 plotly~=6.6.0
-polars~=1.39.0
+polars~=1.39.2
 dash~=3.4.0
 pytest~=9.0.2
 pylint~=4.0.5