Bump apispec from 6.7.1 to 6.8.0

Bumps [apispec](https://github.com/marshmallow-code/apispec) from 6.7.1 to 6.8.0.
- [Changelog](https://github.com/marshmallow-code/apispec/blob/dev/CHANGELOG.rst)
- [Commits](marshmallow-code/apispec@6.7.1...6.8.0)

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

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

pyproject.toml

@@ -52,7 +52,7 @@ tests = [
   "flask==3.1.0",
   "marshmallow==3.23.1",
   "webargs==8.6.0",
-  "apispec==6.7.1",
+  "apispec==6.8.0",
   "PyYAML==6.0.2",
 ]
 dev = [