Bump owasp-schema from 0.1.45 to 0.1.46 in /backend (#2733)

Bumps [owasp-schema](https://github.com/OWASP/Nest) from 0.1.45 to 0.1.46.
- [Release notes](https://github.com/OWASP/Nest/releases)
- [Commits](0.1.45...0.1.46)

---
updated-dependencies:
- dependency-name: owasp-schema
  dependency-version: 0.1.46
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

backend/poetry.lock

@@ -32,7 +32,7 @@ langgraph = "^1.0.1"
 lxml = "^6.0.0"
 markdown = "^3.7"
 openai = "^2.0.1"
-owasp-schema = "^0.1.36"
+owasp-schema = "^0.1.46"
 pgvector = "^0.4.1"
 psycopg2-binary = "^2.9.9"
 pydantic = "^2.11.1"