Bump @rjsf/bootstrap-4 from 3.0.0 to 3.2.1 in /example

Bumps @rjsf/bootstrap-4 from 3.0.0 to 3.2.1.

---
updated-dependencies:
- dependency-name: "@rjsf/bootstrap-4"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

example/package-lock.json

@@ -16,7 +16,7 @@
   },
   "dependencies": {
     "@ginkgo-bioworks/react-json-schema-form-builder": "file:..",
-    "@rjsf/bootstrap-4": "^3.0.0",
+    "@rjsf/bootstrap-4": "^3.2.1",
     "@rjsf/core": "^3.0.0",
     "bootstrap": "file:../node_modules/bootstrap",
     "react": "file:../node_modules/react",