chore(python): prepare 0.6.2 (geoarrow#1405)

python v0.6.1 was actually already published from this branch:
geoarrow#1400

Closes geoarrow#1400

Author: kylebarron

python/CHANGELOG.md

@@ -2,12 +2,16 @@
 
 ## Unreleased
 
-## [0.6.1] - 2025-12-03
+## [0.6.2] - 2025-12-03
 
 ### What's Changed
 
 - feat(Python): Update macOS runners in GitHub workflows; build intel wheels #1403
 
+## [0.6.1] - 2025-11-20
+
+Published from this provisional branch: https://github.com/geoarrow/geoarrow-rs/pull/1400
+
 ## [0.6.0] - 2025-10-16
 
 ### What's Changed