Update release.yml

Author: xyloflake

.github/workflows/release.yml

@@ -31,6 +31,7 @@ jobs:
               ~/.cargo/git/db/
               target/
             key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+            restore-keys: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
 
         - name: Build
           run: cargo build --all --release && strip target/release/mufbot-dc