Bump jest from 25.5.4 to 26.6.3

Bumps [jest](https://github.com/facebook/jest) from 25.5.4 to 26.6.3.
- [Release notes](https://github.com/facebook/jest/releases)
- [Changelog](https://github.com/facebook/jest/blob/master/CHANGELOG.md)
- [Commits](jestjs/jest@v25.5.4...v26.6.3)

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]