Update CHANGELOG.md with generated patch notes for 4.2.1 (#2930)

CHANGELOG.md

@@ -17,7 +17,18 @@ should change the heading of the (upcoming) version to include a major version b
 -->
 # v5.0.0 (coming soon)
 
-# 4.2.1 (upcoming)
+# 4.2.1
+* fix typo by @epicfaace in https://github.com/rjsf-team/react-jsonschema-form/pull/2854
+* Build all packages with TypeScript, including core by @nickgros in https://github.com/rjsf-team/react-jsonschema-form/pull/2799
+* fix(@rjsf/chakra-ui): append SubmitButton by @terrierscript in https://github.com/rjsf-team/react-jsonschema-form/pull/2860
+* fix: Pass uiSchema to custom ArrayField by @bakajvo in https://github.com/rjsf-team/react-jsonschema-form/pull/2769
+* fix(@rjsf-antd): Submit button type bug (#2867) by @sarpere in https://github.com/rjsf-team/react-jsonschema-form/pull/2869
+* Docs: Clarify registry object structure and that it's passed down to custom widgets by @epicfaace in https://github.com/rjsf-team/react-jsonschema-form/pull/2886
+* fix: allow UISchemaSubmitButtonOptions properties to be undefined by @maxpou in https://github.com/rjsf-team/react-jsonschema-form/pull/2876
+* Create FUNDING.yml by @epicfaace in https://github.com/rjsf-team/react-jsonschema-form/pull/2866
+* docs: fix schema dependencies link by @epicfaace in https://github.com/rjsf-team/react-jsonschema-form/pull/2885
+* chore(deps): bump core-js-pure from 3.21.1 to 3.23.3 by @dependabot in https://github.com/rjsf-team/react-jsonschema-form/pull/2902
+* chore(deps): bump minimist from 1.2.5 to 1.2.6 in /packages/fluent-ui by @dependabot in https://github.com/rjsf-team/react-jsonschema-form/pull/2805
 
 # 4.2.0