build(deps): update openapi-core requirement from ~=0.19.2 to ~=0.19.4

Updates the requirements on [openapi-core](https://github.com/python-openapi/openapi-core) to permit the latest version.
- [Release notes](https://github.com/python-openapi/openapi-core/releases)
- [Commits](python-openapi/openapi-core@0.19.2...0.19.4)

---
updated-dependencies:
- dependency-name: openapi-core
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements-test.txt

@@ -3,6 +3,6 @@ psycopg2-binary~=2.9.9
 sqlparse~=0.5.1
 python-dateutil~=2.9.0
 tblib~=3.0.0
-openapi-core~=0.19.2
+openapi-core~=0.19.4
 jsonschema-path~=0.3.3
 termcolor~=2.4.0