Bump angular from 1.6.0 to 1.7.9 (#7)

Bumps [angular](https://github.com/angular/angular.js) from 1.6.0 to 1.7.9. - [Release notes](https://github.com/angular/angular.js/releases) - [Changelog](https://github.com/angular/angular.js/blob/master/CHANGELOG.md) - [Commits](angular/angular.js@v1.6.0...v1.7.9) Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -23,7 +23,7 @@
  },
  "homepage": "https://github.com/moshfeu/multi-select-angularjs#readme",
  "dependencies": {
- "angular": "^1.6.0",
+ "angular": "^1.7.9",
  "jquery": "^3.4.0",
  "jquery.quicksearch": "^2.4.0",
  "multiselect": "^0.9.12"