fix: project/c4-serverless-app/client/package.json & project/c4-serverless-app/client/package-lock.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-CROSSSPAWN-8303230
- https://snyk.io/vuln/SNYK-JS-SEMVER-3247795

Author: snyk-bot