upgrade angular

epf-front-skeleton-main/.browserslistrc

epf-front-skeleton-main/angular.json

epf-front-skeleton-main/package-lock.json

epf-front-skeleton-main/package.json

epf-front-skeleton-main/src/app/app.module.ts

epf-front-skeleton-main/src/app/home/home.component.html

epf-front-skeleton-main/src/app/home/home.component.scss

...c/app/majors/major-students/major-students.component.scss

.../src/app/majors/major-students/major-students.resolver.ts

epf-front-skeleton-main/src/app/majors/majors.component.scss

epf-front-skeleton-main/src/app/majors/majors.resolver.ts

epf-front-skeleton-main/src/app/navbar/navbar.component.scss

...p/students/student-details/student-details.component.scss

.../app/students/student-details/student-details.resolver.ts

...nt-skeleton-main/src/app/students/students.component.scss

...front-skeleton-main/src/app/students/students.resolver.ts

epf-front-skeleton-main/src/bootstrap/_bootstrap.scss

epf-front-skeleton-main/src/styles.scss

epf-front-skeleton-main/src/test.ts

epf-front-skeleton-main/src/theme.scss