Update dependency phpunit/phpunit to v7 - abandoned

[mend-for-github-com[bot]]

This PR contains the following updates:

Package	Type	Update	Change
phpunit/phpunit (source)	require-dev	major	~5.0 -> ~7.0

By merging this PR, the below issues will be automatically resolved and closed:

Severity	CVSS Score	CVE	GitHub Issue
High	9.8	WS-2020-0003	#10

---

• [ ] If you want to rebase/retry this PR, click this checkbox. ⚠ Warning: custom changes will be lost.

[mend-for-github-com[bot]]

⚠ 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 check 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 phpunit/phpunit --with-dependencies --ignore-platform-reqs --no-ansi --no-interaction --no-scripts --no-autoloader --no-plugins
Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - brianium/paratest is locked to version dev-master and an update of this package was not requested.
    - brianium/paratest dev-master requires phpunit/phpunit ~5.0 -> found phpunit/phpunit[5.0.0, ..., 5.7.27] but it conflicts with your root composer.json require (~7.0).

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

[mend-for-github-com[bot]]

Autoclosing Skipped

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