Update CHANGELOG

Author: josevalim

CHANGELOG.md

@@ -216,11 +216,17 @@ This work was performed by Jonatan Männchen and sponsored by the Erlang Ecosyst
 #### Elixir
 
   * [Code] Return error on invalid unicode sequences in `Code.string_to_quoted/2` instead of raising
+  * [Inspect] Inspect ill-formed structs as maps
   * [Kernel] Properly increment metadata newline when `?` is followed ny a literal newline character
 
 #### ExUnit
 
   * [ExUnit.Assertions] Fix order in ExUnit results when listing pinned variables
+  * [ExUnit.Assertions] Raise if attempting to raise an assertion error with invalid message (not a binary)
+
+#### Mix
+
+  * [mix test] Prevent `mix test` from overriding `:failures_manifest_path` option
 
 ## v1.19.0-rc.0 (2025-06-09)