v5.5.0

📚 PR:

• Bump knex from 0.21.19 to 0.95.0
• Merge pull request #134 from fastify/dependabot/npm_and_yarn/knex-0.95.0
• docs: typo README.md (#135)
• chore(gitignore): use latest github ignore template (#136)
• ci(dependabot): update github actions (#137)
• Bump actions/setup-node from v1 to v2.1.5 (#139)
• Bump fastify/github-action-merge-dependabot from v1 to v1.2.1 (#138)
• Add ability to rate limit 404 handler (#140)