fix

Author: f-gate

.github/workflows/build.yml

@@ -15,7 +15,7 @@ on:
 env:
   CARGO_TERM_COLOR: always
   GCP_ZONES: (europe-central2-a, europe-central2-b, europe-central2-c, europe-north1-a, europe-north1-b, europe-north1-c, europe-west1-b, europe-west1-c)
-  GCP_ZONE: ${GCP_ZONES[$((RANDOM % 8)]})
+  GCP_ZONE: ${GCP_ZONES[$((RANDOM % 8))]}
 
 jobs:
   check_branch: