fix: update karma-jasmine to ^1 for karma 6 compatibility

karma-jasmine 1.x is the last major version that:
- Works with karma 6.x (peer dep: karma: '*')
- Works with jasmine-core 2.x (peer dep: jasmine-core: '*')

Version 2.x+ requires jasmine-core 3.x which is incompatible with
the pinned jasmine-core@2.6.4 (required for edx-ui-toolkit).

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: feanil