Bump bref/bref from 1.1.4 to 1.2.6

Bumps [bref/bref](https://github.com/brefphp/bref) from 1.1.4 to 1.2.6.
- [Release notes](https://github.com/brefphp/bref/releases)
- [Changelog](https://github.com/brefphp/bref/blob/master/docs/newsletters.md)
- [Commits](brefphp/bref@1.1.4...1.2.6)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]