chore: fix security vulnerabilities via npm audit fix and overrides

[buge]

Updated devDependencies such as mocha and typescript-eslint to safe versions. Also used the overrides field in package.json to force an updated version of serialize-javascript (used heavily by deep dependencies like mocha), mitigating severe security vulnerabilities. Resulting npm audit is now clean, and all tests still pass smoothly.

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PR created automatically by Jules for task 15189040063686847802 started by @buge

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