owncloud/core

Change: Update JavaScript dependencies

The following have been updated:
- karma (4.4.1 to 6.3.8)
- minimist (1.2.3 to 1.2.5)
- sinon (7.5.0 to 12.0.1)
- bower_components/base64 (1.0.2 to 1.1.0)
- bower_components/clipboard (2.0.4 to 2.0.6)
- bower_components/handlebars (4.5.3 to 4.7.7)
- bower_components/moment (2.24.0 to 2.29.1)
- bower_components/underscore (1.9.1 to 1.13.1)

https://github.com/owncloud/core/pull/39385
https://github.com/owncloud/core/pull/39145
https://github.com/owncloud/core/pull/38670
https://github.com/owncloud/core/pull/38671
https://github.com/owncloud/core/pull/39407
https://github.com/owncloud/core/pull/36633
https://github.com/owncloud/core/pull/39421
https://github.com/owncloud/core/pull/39417
https://github.com/owncloud/core/pull/39447
https://github.com/owncloud/core/pull/39464
https://github.com/owncloud/core/pull/39468