Bump squizlabs/php_codesniffer from 3.5.5 to 3.5.6
Bump squizlabs/php_codesniffer from 3.5.5 to 3.5.6

Bumps [squizlabs/php_codesniffer](https://github.com/squizlabs/PHP_CodeSniffer) from 3.5.5 to 3.5.6.
- [Release notes](https://github.com/squizlabs/PHP_CodeSniffer/releases)
- [Commits](https://github.com/squizlabs/PHP_CodeSniffer/compare/3.5.5...3.5.6)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
ilios/ilios,thecoolestguy/ilios,ilios/ilios,dartajax/ilios,stopfstedt/ilios,Trott/ilios,dartajax/ilios,Trott/ilios,thecoolestguy/ilios,stopfstedt/ilios