fix: client/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade: - https://snyk.io/vuln/SNYK-JS-ANGULAR-572020

Author: snyk-bot

client/package.json

@@ -33,7 +33,7 @@
  "yargs": "^3.20.0"
  },
  "dependencies": {
- "angular": "~1.6.1",
+ "angular": "~1.8.0",
  "angular-animate": "~1.6.1",
  "angular-aria": "~1.6.1",
  "angular-cookies": "~1.6.1",