Dependabot can't resolve your PHP dependency files

[dependabot-preview]

Dependabot can't resolve your PHP dependency files.

As a result, Dependabot couldn't update your dependencies.

The error Dependabot encountered was:

Your requirements could not be resolved to an installable set of packages.
  Problem 1
    - jbzoo/toolbox-dev[dev-master, 2.6.2, ..., 2.8.0] require jbzoo/composer-graph ^1.0.4 -> satisfiable by jbzoo/composer-graph[1.0.4, 1.x-dev (alias of dev-master)].
    - jbzoo/composer-graph 1.x-dev is an alias of jbzoo/composer-graph dev-master and thus requires it to be installed too.
    - jbzoo/composer-graph[dev-master, 1.0.4] require jbzoo/mermaid-php ^2.1.3 -> satisfiable by jbzoo/mermaid-php[2.1.3] from composer repo (https://repo.packagist.org) but jbzoo/mermaid-php[1.0.0+no-version-set] from root package repo has higher repository priority. The packages with higher priority do not match your constraint and are therefore not installable. See https://getcomposer.org/repoprio for details and assistance.
    - jbzoo/toolbox-dev 2.x-dev is an alias of jbzoo/toolbox-dev dev-master and thus requires it to be installed too.
    - Root composer.json requires jbzoo/toolbox-dev ^2.6.2 -> satisfiable by jbzoo/toolbox-dev[2.6.2, 2.7.0, 2.8.0, 2.x-dev (alias of dev-master)].

If you think the above is an error on Dependabot's side please don't hesitate to get in touch - we'll do whatever we can to fix it.

View the update logs.