Rename change message and into update message

[Shatur]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 93.93939% with 4 lines in your changes missing coverage. Please review.

Project coverage is 90.20%. Comparing base (42537ea) to head (28547de).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/core/event_registry/server_event.rs	81.81%	2 Missing ⚠️
src/client.rs	92.30%	1 Missing ⚠️
src/server.rs	94.44%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #372   +/-   ##
=======================================
  Coverage   90.20%   90.20%           
=======================================
  Files          46       46           
  Lines        2562     2562           
=======================================
  Hits         2311     2311           
  Misses        251      251           

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