chore(deps-dev): bump babel-loader from 8.0.6 to 8.1.0 in /packages/core (rjsf-team#1837)

Bumps [babel-loader](https://github.com/babel/babel-loader) from 8.0.6 to 8.1.0. - [Release notes](https://github.com/babel/babel-loader/releases) - [Changelog](https://github.com/babel/babel-loader/blob/master/CHANGELOG.md) - [Commits](babel/babel-loader@v8.0.6...v8.1.0) Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]