chore: bump msrv

Author: thedevbirb

README.md

@@ -52,7 +52,7 @@ The 📖 [MSG-RS Book][book] contains detailed information on how to use the lib
 
 ## MSRV
 
-The minimum supported Rust version is 1.88 (see [rust-toolchain.toml](./rust-toolchain.toml)).
+The minimum supported Rust version is 1.89.0 (see [rust-toolchain.toml](./rust-toolchain.toml)).
 
 ## Contributions & Bug Reports
 

rust-toolchain.toml

@@ -1,3 +1,3 @@
 [toolchain]
-channel = "1.88.0"
+channel = "1.89.0"
 components = ["rust-analyzer"]