Update actions-rs/toolchain digest to 88dc235

Author: renovate[bot]

.github/workflows/rust-clippy.yml

@@ -36,7 +36,7 @@ jobs:
 
       - name: Install Rust toolchain
         # @v1
-        uses: actions-rs/toolchain@16499b5e05bf2e26879000db0c1d13f7e13fa3af
+        uses: actions-rs/toolchain@88dc2356392166efad76775c878094f4e83ff746
         with:
           profile: minimal
           toolchain: stable