Update dependency phpstan/phpstan-mockery to v2

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
phpstan/phpstan-mockery	^1.1.3 -> ^2.0.0

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Release Notes

phpstan/phpstan-mockery (phpstan/phpstan-mockery)

v2.0.0

Compare Source

• 89a949d - Fix after PHPStan update
• c894582 - Fix after PHPStan update
• bd4d176 - Merge branch '1.1.x' into 2.0.x
• 07ddbb5 - Update build-cs
• d1f1d46 - Stop testing PHP 7.2 and 7.3
• 0b12514 - Open 2.0.x

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Configuration

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♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

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• If you want to rebase/retry this PR, check this box

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[renovate]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
• you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: composer.lock

Command failed: composer update phpstan/phpstan-mockery:2.0.0 --with-dependencies --ignore-platform-req='ext-*' --ignore-platform-req='lib-*' --no-ansi --no-interaction --no-scripts --no-autoloader --no-plugins
Loading composer repositories with package information
Dependency phpstan/phpstan is also a root requirement. Package has not been listed as an update argument, so keeping locked at old version. Use --with-all-dependencies (-W) to include root dependencies.
Updating dependencies
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Root composer.json requires phpstan/phpstan-mockery ^2.0.0 -> satisfiable by phpstan/phpstan-mockery[2.0.0].
    - phpstan/phpstan-mockery 2.0.0 requires phpstan/phpstan ^2.0 -> found phpstan/phpstan[2.0.0, ..., 2.1.2] but it conflicts with your root composer.json require (^1.12.16).

Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.