chore: upgrade Rust to 1.54.0 (#1076)

Author: magurotuna

.github/workflows/ci.yml

@@ -111,7 +111,7 @@ jobs:
         if: success() && steps.source.outputs.modified == 'true'
         with:
           # This must match the version in hash/_wasm/rust-toolchain:
-          rust-version: 1.53.0
+          rust-version: 1.54.0
           targets: wasm32-unknown-unknown
           components: rustfmt