[Snyk] Security upgrade restify from 8.6.1 to 9.0.0

[hekike]

This PR was automatically created by Snyk using the credentials of a real user.

Snyk has created this PR to fix one or more vulnerable packages in the `npm` dependencies of this project.

#### Changes included in this PR - Changes to the following files to upgrade the vulnerable dependencies to a fixed version: - examples/todoapp/package.json #### Vulnerabilities that will be fixed ##### With an upgrade: Severity | Priority Score (*) | Issue | Breaking Change | Exploit Maturity :-------------------------:|-------------------------|:-------------------------|:-------------------------|:-------------------------  | **661/1000**
**Why?** Recently disclosed, Has a fix available, CVSS 7.5 | Missing Release of Resource after Effective Lifetime
[SNYK-JS-INFLIGHT-6095116](https://snyk.io/vuln/SNYK-JS-INFLIGHT-6095116) | Yes | No Known Exploit (*) Note that the real score may have changed since the PR was raised.

Commit messages

Package name: restify

The new version differs by 23 commits.

• caba351 updated package.json [ci skip]
• bf2e42a updated CHANGELOG.md [ci skip]
• c15111f chore: drop support for EOL Node.js versions
• d052b7c feat: deprecate req.closed
• 839fb4a chore: bump version of http-signature to ^1.3.6 (#1889)
• cc483e0 chore: remove travis and update github ci (#1878)
• 195cf13 fix: Correct typo in assertion message (#1904)
• 0a8cf83 chore!: remove deprecated usage of pino.child (#1902)
• 97b6f93 fix: make arity error message actionable (#1901)
• 05f12a6 fix: Re-add support for clientError listeners (#1897)
• ddc1042 fix: don't create empty clientError listener for http.Server (#1895)
• 5c7eb95 fix: use close event on response instead of socket (#1892)
• 4d404d4 docs: fix handleUncaughtExceptions docs typos (#1885)
• 71c7f49 chore: Actions CI for 16
• 6aac376 chore: fix flaky test
• 36318ae fix: use more reliable close event
• 3002182 fix: format falsy constants properly in json formatter (#1792)
• 19b8662 docs(jsdocs): fix jsdoc for response.sendRaw (#1858)
• 9153587 feat: remove re-routing from handler (#1847)
• 71ac3a0 chore: upgrade send from 0.16.2 to 0.17.1 (#1846)
• 2f5bf87 Prefer Pino logger over Bunyan (#1841)
• 12be9e2 feat: async/await support
• bd34988 chore: drop support for node 8

See the full diff

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