build(deps): bump terser and @angular-devkit/build-angular

Bumps [terser](https://github.com/terser/terser) and [@angular-devkit/build-angular](https://github.com/angular/angular-cli). These dependencies needed to be updated together.

Updates `terser` from 5.11.0 to 5.14.2
- [Release notes](https://github.com/terser/terser/releases)
- [Changelog](https://github.com/terser/terser/blob/master/CHANGELOG.md)
- [Commits](https://github.com/terser/terser/compare/v5.11.0...v5.14.2)

Updates `@angular-devkit/build-angular` from 13.3.0 to 13.3.9
- [Release notes](https://github.com/angular/angular-cli/releases)
- [Changelog](https://github.com/angular/angular-cli/blob/main/CHANGELOG.md)
- [Commits](https://github.com/angular/angular-cli/compare/13.3.0...13.3.9)

---
updated-dependencies:
- dependency-name: terser
  dependency-type: indirect
- dependency-name: "@angular-devkit/build-angular"
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

openvidu-server/src/dashboard/package.json

@@ -19,7 +19,7 @@
         "zone.js": "0.11.5"
     }, 
     "devDependencies": {
-        "@angular-devkit/build-angular": "13.3.0", 
+        "@angular-devkit/build-angular": "13.3.9", 
         "@angular/cli": "13.3.0", 
         "@angular/compiler-cli": "13.3.0", 
         "@angular/language-service": "13.3.0",