Upgrade to Angular 18

[tdonohue]

As discussed in our DevMtg on Sept 5, 2024, we need to begin planning for our upgrade to Angular 18 as this may be a more complex upgrade. Ideally this upgrade will be completed in time for DSpace 9.0

• Webpack is no longer supported. Some automated migrations exist, see: https://angular.dev/tools/cli/build-system-migration
• Karma is no longer supported for unit testing (and is deprecated). Must migrate to Jest or Web Test Runner: https://blog.angular.dev/moving-angular-cli-to-jest-and-web-test-runner-ef85ef69ceca

Additional resources:

• https://update.angular.io/
• https://blog.angular.dev/angular-v18-is-now-available-e79d5ac0affe
• https://dev.to/this-is-angular/whatnew-in-angular-18-60j

[tdonohue]

@atarix83 : Pinging you on this new ticket, in case you have additional resources to add to the list above. I did my best to summarize your comments from today's meeting about Webpack & Karma, but let me know if I missed anything or if you have additional comments/feedback to share