composer(deps): bump justinrainbow/json-schema from 5.2.11 to 5.2.12

Bumps [justinrainbow/json-schema](https://github.com/justinrainbow/json-schema) from 5.2.11 to 5.2.12.
- [Release notes](https://github.com/justinrainbow/json-schema/releases)
- [Commits](jsonrainbow/json-schema@5.2.11...5.2.12)

---
updated-dependencies:
- dependency-name: justinrainbow/json-schema
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

composer.json

@@ -25,7 +25,7 @@
     "composer-plugin-api": "^2.0.0",
     "ergebnis/json-normalizer": "~2.1.0",
     "ergebnis/json-printer": "^3.2.0",
-    "justinrainbow/json-schema": "^5.2.11",
+    "justinrainbow/json-schema": "^5.2.12",
     "localheinz/diff": "^1.1.1"
   },
   "require-dev": {