Update action.yml

Author: timkpaine

setup/action.yml

@@ -41,7 +41,7 @@ runs:
               ~/.cargo/registry/cache/
               ~/.cargo/git/db/
               **/target
-          key: ${{ runner.os }}-cargo-${{ hashFiles('Cargo.lock') }}
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
 
     - run: |
         rustup target add aarch64-unknown-linux-gnu