ci: update MSRV job to 1.88

Author: workingjubilee

.github/workflows/main.yml

@@ -259,7 +259,7 @@ jobs:
         with:
           submodules: true
       - name: Install Rust
-        run: rustup update 1.82.0 --no-self-update && rustup default 1.82.0
+        run: rustup update 1.88.0 --no-self-update && rustup default 1.88.0
       - run: cargo build
 
   miri: