Release 5.18.1 (#4145)

* - Bumped peer dependencies due to new feature

* v5.18.1

* - Removed unnecessary `package-lock.json` in `fluentui-rc` theme

Author: heath-freenome

lerna.json

@@ -1,6 +1,6 @@
 {
   "packages": ["packages/*"],
-  "version": "5.18.0",
+  "version": "5.18.1",
   "$schema": "node_modules/lerna/schemas/lerna-schema.json",
   "useNx": true,
   "useWorkspaces": true