fix(testing): pin karma-jasmine to 4.0.2

[rigor789]

PR Checklist

• The PR title follows our guidelines: https://github.com/NativeScript/NativeScript/blob/master/tools/notes/CONTRIBUTING.md#commit-messages.
• There is an issue for the bug/feature this PR is for. To avoid wasting your time, it's best to open a suggestion issue first and wait for approval before working on it.
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What is the current behavior?

What is the new behavior?

fixes #5690

[rigor789]

TODO: update to latest karma-jasmine & resolve breaking changes