Bump the Rust toolchain version to 1.89

Author: Kerollmops

.github/workflows/rust.yml

@@ -23,7 +23,7 @@ jobs:
           - beta
     steps:
       - uses: actions/checkout@v1
-      - uses: dtolnay/rust-toolchain@1.85
+      - uses: dtolnay/rust-toolchain@1.89
       - uses: actions-rs/cargo@v1
         with:
           command: build
@@ -39,7 +39,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v1
-      - uses: dtolnay/rust-toolchain@1.85
+      - uses: dtolnay/rust-toolchain@1.89
         with:
           profile: minimal
           components: clippy, rustfmt