ci: fix release cargo version

Signed-off-by: Henry Gressmann <mail@henrygressmann.de>

Author: explodingcamera

.github/workflows/release.yaml

@@ -68,6 +68,7 @@ jobs:
         with:
           name: web-dist
           path: ./web/dist
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
       - uses: taiki-e/upload-rust-binary-action@v1.23.0
         with:
           bin: liwan