v2.2.1

@rjsf/core

• Do not omit nested additionalProperties (#1774) (c33204e), closes #1774 #1497

@rjsf/antd theme

• Update antd dependencies (#1876) (59f86ad), closes #1876

@rjsf/semantic-ui theme

• Update semantic-ui package-lock (#1877) (3d04d6d), closes #1877

Dev / docs / CI

• chore(deps): bump actions/setup-node from v2.0.0 to v2.1.0 (#1883) (7c18c75), closes #1883