fix(ci): add pnpm-lock.yaml to build-cas paths filter

Author: SPCFXDA

.github/workflows/build-cas.yml

@@ -12,6 +12,7 @@ on:
       - "v[0-9]+.[0-9]+.[0-9]+-*"
     paths:
       - "apps/cas/backend/**"
+      - "pnpm-lock.yaml"
       - ".github/workflows/build-cas.yml"
 
 concurrency: