CI/benches: fix default working directory

Author: dhardy

.github/workflows/benches.yml

@@ -6,10 +6,6 @@ on:
       - ".github/workflows/benches.yml"
       - "benches/**"
 
-defaults:
-  run:
-    working-directory: ./benches
-
 jobs:
   benches:
     runs-on: ubuntu-latest
@@ -20,8 +16,11 @@ jobs:
           toolchain: nightly
           components: clippy, rustfmt
       - name: Rustfmt
+        working-directory: ./benches
         run: cargo fmt --all -- --check
       - name: Clippy
+        working-directory: ./benches
         run: cargo clippy --all --all-targets -- -D warnings
       - name: Build
+        working-directory: ./benches
         run: RUSTFLAGS=-Dwarnings cargo build --all-targets