v5.1.0

📚 PR:

• Bump fastify-plugin from 2.3.4 to 3.0.0
• Bump standard from 14.3.4 to 15.0.0
• Bump snazzy from 8.0.0 to 9.0.0
• Bump standard from 15.0.1 to 16.0.2
• fix lint
• Bump tsd from 0.13.1 to 0.14.0
• Merge pull request #105 from fastify/dependabot/npm_and_yarn/tsd-0.14.0
• feat: add stale (#98)
• chore: add dependabot automerge (#104)
• Fix example (#106)