deps: bump avvio from 8.4.0 to 9.0.0 (#634)

Bumps [avvio](https://github.com/fastify/avvio) from 8.4.0 to 9.0.0.
- [Release notes](https://github.com/fastify/avvio/releases)
- [Commits](fastify/avvio@v8.4.0...v9.0.0)

---
updated-dependencies:
- dependency-name: avvio
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -30,7 +30,7 @@
     "@twurple/auth": "^7.0.0",
     "ajv": "^8.0.5",
     "ajv-formats": "^3.0.1",
-    "avvio": "^8.0.0",
+    "avvio": "^9.0.0",
     "bcryptjs": "^2.4.3",
     "body-parser": "^1.19.0",
     "cookie": "^0.6.0",