Bump jsonschema-specifications in /requirements

Bumps [jsonschema-specifications](https://github.com/python-jsonschema/jsonschema-specifications) from 2025.4.1 to 2025.9.1.
- [Release notes](https://github.com/python-jsonschema/jsonschema-specifications/releases)
- [Commits](python-jsonschema/jsonschema-specifications@v2025.4.1...v2025.9.1)

---
updated-dependencies:
- dependency-name: jsonschema-specifications
  dependency-version: 2025.9.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements/prod.txt

@@ -1532,9 +1532,9 @@ rpds-py==0.28.0 \
     --hash=sha256:f586db2e209d54fe177e58e0bc4946bea5fb0102f150b1b2f13de03e1f0976f8 \
     --hash=sha256:f5e7101145427087e493b9c9b959da68d357c28c562792300dd21a095118ed16 \
     --hash=sha256:f9174471d6920cbc5e82a7822de8dfd4dcea86eb828b04fc8c6519a77b0ee51e
-jsonschema-specifications==2025.4.1 \
-    --hash=sha256:4653bffbd6584f7de83a67e0d620ef16900b390ddc7939d56684d6c81e33f1af \
-    --hash=sha256:630159c9f4dbea161a6a2205c3011cc4f18ff381b189fff48bb39b9bf26ae608
+jsonschema-specifications==2025.9.1 \
+    --hash=sha256:98802fee3a11ee76ecaca44429fda8a41bff98b00a0f2838151b113f210cc6fe \
+    --hash=sha256:b540987f239e745613c7a9176f3edb72b832a4ac465cf02712288397832b5e8d
 drf-spectacular-sidecar==2025.10.1 \
     --hash=sha256:506a5a21ce1ad7211c28acb4e2112e213f6dc095a2052ee6ed6db1ffe8eb5a7b \
     --hash=sha256:f1de343184d1a938179ce363d318258fe1e5f02f2f774625272364835f1c42bd