Releasing 6.0.0-beta.13

[robbieculkin]

Reasons for making this change

Releasing 6.0.0-beta.13

Checklist

• I'm updating documentation
  • I've checked the rendering of the Markdown text I've added
• I'm adding or updating code
  • I've added and/or updated tests. I've run npx nx run-many --target=build --exclude=@rjsf/docs && npm run test:update to update snapshots, if needed.
  • I've updated docs if needed
  • I've updated the changelog with a description of the PR
• I'm adding a new feature
  • I've updated the playground with an example use of the feature

[heath-freenome]

@robbieculkin I am waiting to add one more fix and then I will run a release. Sorry for the delay, I was on vacation for the last 2 weeks.