Update rust cache version in release workflow

Author: asaaki

.github/workflows/release.yaml

@@ -25,9 +25,9 @@ jobs:
       with:
         node-version: '16'
 
-    - uses: Swatinem/rust-cache@v1
+    - uses: Swatinem/rust-cache@v2
       with:
-        working-directory: rust
+        workspace: rust
 
     - uses: actions/cache@v3
       with: