build(deps-dev): replace standard with neostandard

[Fdawgs]

The main fastify repo migrated from standard to neostandard with fastify/fastify#5509, so the rest of the repos should (neo)standardise around this and use the same linting tool. At present we have a mishmash of standard, eslint with custom rules and various plugins, and prettier across the plugin repos.

Checklist

• run npm run test and npm run benchmark
• tests and/or benchmarks are included
• documentation is changed or added
• commit message and code follows the Developer's Certification of Origin
  and the Code of conduct

[github-actions]

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