Bump apispec from 6.3.1 to 6.7.1

Bumps [apispec](https://github.com/marshmallow-code/apispec) from 6.3.1 to 6.7.1.
- [Changelog](https://github.com/marshmallow-code/apispec/blob/dev/CHANGELOG.rst)
- [Commits](marshmallow-code/apispec@6.3.1...6.7.1)

---
updated-dependencies:
- dependency-name: apispec
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -24,7 +24,7 @@ elasticsearch==7.17.0
 marshmallow==3.21.1
 gunicorn[eventlet]==22.0.0
 jsonschema==4.22.0
-apispec==6.3.1
+apispec==6.7.1
 apispec-webframeworks==0.5.2
 blinker==1.8.1
 Babel==2.12.1