Bump serialize-javascript and mocha (#417)

Bumps
[serialize-javascript](https://github.com/yahoo/serialize-javascript) to
6.0.2 and updates ancestor dependency
[mocha](https://github.com/mochajs/mocha). These dependencies need to be
updated together.

Updates `serialize-javascript` from 6.0.0 to 6.0.2
Updates `mocha` from 10.2.0 to 10.8.2

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]