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
    - Root composer.json requires yiisoft/yii-core, it could not be found in any version, there may be a typo in the package name.
  Problem 2
    - Root composer.json requires yiisoft/strings ^3.0@dev, found yiisoft/strings[dev-master, 1.0.0, 1.0.1, 1.1.0] but it does not match the constraint.
  Problem 3
    - yiisoft/db dev-master requires yiisoft/strings ^1.1 -> found yiisoft/strings[1.1.0] but it conflicts with your root composer.json require (^3.0@dev).
    - yiisoft/db 3.0.x-dev is an alias of yiisoft/db dev-master and thus requires it to be installed too.
    - Root composer.json requires yiisoft/db ^3.0@dev -> satisfiable by yiisoft/db[3.0.x-dev (alias of dev-master)].

Potential causes:
 - A typo in the package name
 - The package is not available in a stable-enough version according to your minimum-stability setting
   see <https://getcomposer.org/doc/04-schema.md#minimum-stability> for more details.
 - It's a private package and you forgot to add a custom repository to find it

Read <https://getcomposer.org/doc/articles/troubleshooting.md> for further common problems.

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.