Merge pull request #205 from matrix-org/quenting/clippy-1.85

ci: bump clippy to 1.85

Author: sandhose

.github/workflows/check.yaml

@@ -43,8 +43,8 @@ jobs:
 
       - name: Install toolchain
         run: |
-          rustup toolchain install 1.81.0
-          rustup default 1.81.0
+          rustup toolchain install 1.85.0
+          rustup default 1.85.0
           rustup component add clippy
 
       - name: Setup Rust cache