chore: upgrade rust to 1.88.0

Test User · Test User · commit 35e1a9b9e7b7 · 2025-07-12T14:24:52.000+09:00
diff --git a/.tool-versions b/.tool-versions
@@ -1,2 +1,2 @@
-rust 1.87.0
+rust 1.88.0
 bun 1.2.15
