Merge pull request #372 from communitiesuk/dependabot/pip/polars-approx-eq-1.39.0

Update polars requirement from ~=1.38.1 to ~=1.39.0

Author: github-actions[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~=1.38.1
+polars~=1.39.0
 dash~=3.4.0
 pytest~=9.0.2
 pylint~=4.0.5