fixed JWT gen command

Author: chernser

.github/workflows/build.yml

@@ -253,7 +253,7 @@ jobs:
         run: |
           echo "{environment_variable_name}={value}" >> "$GITHUB_ENV"
           npm install jsonwebtoken -g &&
-          echo "CLIENT_JWT=$(JWT_K_PEM=$(cat k.pem) node jwt.js)" >> "$GITHUB_ENV"
+          echo "CLIENT_JWT=$(node jwt.js)" >> "$GITHUB_ENV"
       - name: Test http client
         env:
           CLICKHOUSE_CLOUD_HOST: ${{ secrets.CLOUD_INSTANCE_HOST }}