chore(deps): bump @microsoft/kiota-serialization-json in /ui/ui-app

Bumps [@microsoft/kiota-serialization-json](https://github.com/microsoft/kiota-typescript) from 1.0.0-preview.68 to 1.0.0-preview.75.
- [Release notes](https://github.com/microsoft/kiota-typescript/releases)
- [Changelog](https://github.com/microsoft/kiota-typescript/blob/main/CHANGELOG.md)
- [Commits](https://github.com/microsoft/kiota-typescript/commits/@microsoft/kiota-serialization-json@1.0.0-preview.75)

---
updated-dependencies:
- dependency-name: "@microsoft/kiota-serialization-json"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

ui/ui-app/package.json

@@ -43,7 +43,7 @@
     "@microsoft/kiota-abstractions": "1.0.0-preview.68",
     "@microsoft/kiota-http-fetchlibrary": "1.0.0-preview.67",
     "@microsoft/kiota-serialization-form": "1.0.0-preview.56",
-    "@microsoft/kiota-serialization-json": "1.0.0-preview.68",
+    "@microsoft/kiota-serialization-json": "1.0.0-preview.75",
     "@microsoft/kiota-serialization-multipart": "1.0.0-preview.46",
     "@microsoft/kiota-serialization-text": "1.0.0-preview.65",
     "@patternfly/patternfly": "5.4.2",