Fix dev dependency vulnerability

src/Web/WebSPA/package.json

@@ -67,6 +67,7 @@
     "@types/selenium-webdriver": "3.0.10",
     "codelyzer": "^5.0.0-beta.1",
     "handlebars": "^4.0.14",
+    "eslint": "4.18.2",
     "jasmine-core": "^3.3.0",
     "jasmine-spec-reporter": "^4.2.1",
     "karma": "^4.0.1",