build(2.0.0-rc.2): include wasm/Cargo.lock, allow trivial_numeric_casts (#5459)

* build(2.0.0-rc.2): include `wasm/Cargo.lock`, allow `trivial_numeric_casts`
* chore: update CHANGELOG.md
* chore(release): bump version to v2.0.0-rc.2.1

Signed-off-by: Shunkichi Sato <49983831+s8sato@users.noreply.github.com>

Author: s8sato

.gitignore

@@ -2,7 +2,6 @@
 **/storage/
 **/*.rs.bk
 **/rusty-tags.vi
-/**/Cargo.lock
 
 crates/iroha_config/__pycaсhe__
 **/__pycache__/*

CHANGELOG.md

@@ -7,6 +7,12 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+## [2.0.0-rc.2.1] - 2025-06-05
+
+### 💼 Other
+
+- *(2.0.0-rc.2)* Include `wasm/Cargo.lock`, allow `trivial_numeric_casts`
+
 ## [2.0.0-rc.2.0] - 2025-05-08
 
 ### 🚀 Features