Update dependency karma to v6

This MR contains the following updates:

Package	Type	Update	Change
karma (source)	devDependencies	major	^5.1.0 -> ^6.0.0

---

Release Notes

karma-runner/karma

v6.0.0

Compare Source

Bug Fixes

• ci: abandon browserstack tests for Safari and IE (#​3615) (04a811d)
• client: do not reset karmaNavigating in unload handler (#​3591) (4a8178f), closes #​3482
• context: do not error when karma is navigating (#​3565) (05dc288), closes #​3560
• cve: update ua-parser-js to 0.7.23 to fix CVE-2020-7793 (#​3584) (f819fa8)
• cve: update yargs to 16.1.1 to fix cve-2020-7774 in y18n (#​3578) (3fed0bc), closes #​3577
• deps: bump socket-io to v3 (#​3586) (1b9e1de), closes #​3569
• middleware: catch errors when loading a module (#​3605) (fec972f), closes #​3572
• server: clean up close-server logic (#​3607) (3fca456)
• test: clear up clearContext (#​3597) (8997b74)
• test: mark all second connections reconnects (#​3598) (1c9c2de)

Features

• cli: error out on unexpected options or parameters (#​3589) (603bbc0)
• client: update banner with connection, test status, ping times (#​3611) (4bf90f7)
• server: print stack of unhandledrejections (#​3593) (35a5842)
• server: remove deprecated static methods (#​3595) (1a65bf1)
• remove support for running dart code in the browser (#​3592) (7a3bd55)

BREAKING CHANGES

• server: Deprecated require('karma').server.start() and require('karma').Server.start() variants were removed from the public API. Instead use canonical form:

  const { Server } = require('karma'); const server = new Server(); server.start();

• cli: Karma is more strict and will error out if unknown option or argument is passed to CLI.

• Using Karma to run Dart code in the browser is no longer supported. Use your favorite Dart-to-JS compiler instead.

dart file type has been removed without a replacement.

customFileHandlers DI token has been removed. Use middleware to achieve similar functionality.

customScriptTypes DI token has been removed. It had no effect, so no replacement is provided.

• deps: Some projects have socket.io tests that are version sensitive.

5.2.3 (2020-09-25)

Bug Fixes

• update us-parser-js dependency (#​3564) (500ed25)

5.2.2 (2020-09-08)

Bug Fixes

• revert source-map update (#​3559) (d9ba284), closes #​3557

5.2.1 (2020-09-02)

Bug Fixes

• remove broken link from docs - 06-angularjs.md (#​3555) (da2f307)
• remove unused JSON utilities and flatted dependency (#​3550) (beed255)

---

Renovate configuration

Schedule: At any time (no schedule defined).

Automerge: Disabled by config. Please merge this manually once you are satisfied.

️ Rebasing: Whenever MR becomes conflicted, or you tick the rebase/retry checkbox.

Ignore: Close this MR and you won't be reminded about this update again.

---

• If you want to rebase/retry this MR, check this box

---

This MR has been generated by Renovate Bot.