v4.0.0

📚 PR:

• Bump form-data from 2.5.1 to 3.0.0
• Merge pull request #123 from fastify/dependabot/npm_and_yarn/form-data-3.0.0
• Bump msgpack5 from 4.5.0 to 5.0.0
• Merge pull request #127 from fastify/dependabot/npm_and_yarn/msgpack5-5.0.0
• fix: sanitize url to avoid attack
• fix: throw when source url is invalid
• Merge pull request #128 from fastify/sanitize-url
• Fixes a typo in the README (#124)
• Fixes another typo in README.md (#125)