Update CHANGELOG.md

Per Larsen · Per Larsen · commit ec7b724ab683 · 2025-08-15T01:18:04.000Z
Note addition of rust-lang#3265
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -227,6 +227,7 @@
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 # Unreleased
 ## Added
+ * Add option in CLI to use rustified repr-C enums (--rustified-repr-c-enum, #3265).
 ## Changed
 ## Removed
 ## Fixed
