Bump spectree from 0.7.2 to 0.7.6

Bumps [spectree](https://github.com/0b01001001/spectree) from 0.7.2 to 0.7.6.
- [Release notes](https://github.com/0b01001001/spectree/releases)
- [Commits](0b01001001/spectree@v0.7.2...v0.7.6)

---
updated-dependencies:
- dependency-name: spectree
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

poetry.lock

@@ -16,7 +16,7 @@ pyjwt = "^2.3.0"
 httpx = "^0.22.0"
 gunicorn = "^20.1.0"
 pydantic = "^1.8.2"
-spectree = "^0.7.2"
+spectree = "^0.7.6"
 deepmerge = "^1.0.1"
 sentry-sdk = "^1.0.0"