fix limiter does not have execute permission

Signed-off-by: james <open4pd@4paradigm.com>

Author: DSFans2014

.github/workflows/ci.yml

@@ -34,6 +34,7 @@ jobs:
         working-directory: ./libvnpu
       - name: Prepare artifacts for upload
         run: |
+          chmod +x libvnpu/target/release/limiter
           mkdir -p ./artifacts
           cp libvnpu/target/release/limiter ./artifacts/
           cp libvnpu/target/release/libvnpu.so ./artifacts/