DOC: Add PR #848 to CHANGELOG.md

Co-authored-by: Gui-FernandesBR <63590233+Gui-FernandesBR@users.noreply.github.com>

Author: Copilot

CHANGELOG.md

@@ -32,6 +32,7 @@ Attention: The newest changes should be on top -->
 
 ### Added
 
+- ENH: Add save functionality to `_MonteCarloPlots.all` method [#848](https://github.com/RocketPy-Team/RocketPy/pull/848)
 - ENH: Add persistent caching for ThrustCurve API [#881](https://github.com/RocketPy-Team/RocketPy/pull/881)
 - ENH: Compatibility with MERRA-2 atmosphere reanalysis files [#825](https://github.com/RocketPy-Team/RocketPy/pull/825)
 - ENH: Enable only radial burning [#815](https://github.com/RocketPy-Team/RocketPy/pull/815)