Bump systemjs from 6.2.3 to 6.2.4 (#4939)

Bumps [systemjs](https://github.com/systemjs/systemjs) from 6.2.3 to 6.2.4.
- [Release notes](https://github.com/systemjs/systemjs/releases)
- [Changelog](https://github.com/systemjs/systemjs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/systemjs/systemjs/compare/6.2.3...6.2.4)
Signed-off-by: Ndependabot-preview[bot] <support@dependabot.com>

package-lock.json

@@ -23605,9 +23605,9 @@
       "dev": true
     },
     "systemjs": {
-      "version": "6.2.3",
-      "resolved": "https://registry.npmjs.org/systemjs/-/systemjs-6.2.3.tgz",
-      "integrity": "sha512-2ic0xO7gnFJmw/wqXU71oXNxSp9u8bNmDeP61STh987dgROiAn4noESJE9WPNdy5EgS/fGLmHC5OjKOE5be1qg=="
+      "version": "6.2.4",
+      "resolved": "https://registry.npmjs.org/systemjs/-/systemjs-6.2.4.tgz",
+      "integrity": "sha512-e++CM66/hoVcpWyfj2TVdj4pqMq8PQQLPgQUjb17W0uD7fpRYmO/ahmNfSDwtLoXxF03YUrBcLgg8RahwpZVig=="
     },
     "table": {
       "version": "3.8.3",

package.json

@@ -129,7 +129,7 @@
     "rxjs": "6.5.4",
     "rxjs-compat": "6.5.4",
     "sockjs-client": "1.4.0",
-    "systemjs": "6.2.3",
+    "systemjs": "6.2.4",
     "truncate-url": "1.0.0",
     "tslib": "1.11.0",
     "web-animations-js": "2.3.2",