Update phpunit/phpunit requirement from ^9.6.7 to ^9.6.8

[dependabot[bot]]

Updates the requirements on phpunit/phpunit to permit the latest version.

Changelog

Sourced from phpunit/phpunit's changelog.

[9.6.8] - 2023-05-11

Fixed

• #5345: No stack trace shown for previous exceptions during bootstrap

[9.6.7] - 2023-04-14

Fixed

• Tests that have @doesNotPerformAssertions do not contribute to code coverage

[9.6.6] - 2023-03-27

Fixed

• #5270: GlobalState::getIniSettingsAsString() generates code that triggers warnings

[9.6.5] - 2023-03-09

Changed

• Backported the HTML and CSS improvements made to the --testdox-html from PHPUnit 10

Fixed

• #5205: Wrong default value for optional parameter of PHPUnit\Util\Test::parseTestMethodAnnotations() causes ReflectionException

[9.6.4] - 2023-02-27

Fixed

• #5186: SBOM does not validate

[9.6.3] - 2023-02-04

Fixed

• #5164: markTestSkipped() not handled correctly when called in "before first test" method

[9.6.2] - 2023-02-04

Fixed

• #4618: Support for generators in assertCount() etc. is not marked as deprecated in PHPUnit 9.6

[9.6.1] - 2023-02-03

Fixed

... (truncated)

Commits

• 17d621b Prepare release
• 71b53ae Fix CS/WS issue
• be7ffef Update ChangeLog
• b7513d5 Add stack trace for previous exceptions to bootstrap error message
• 4b4e628 Merge branch '8.5' into 9.6
• 22c8daa Update tools
• See full diff in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR: - `@dependabot rebase` will rebase this PR - `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it - `@dependabot merge` will merge this PR after your CI passes on it - `@dependabot squash and merge` will squash and merge this PR after your CI passes on it - `@dependabot cancel merge` will cancel a previously requested merge and block automerging - `@dependabot reopen` will reopen this PR if it is closed - `@dependabot close` will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually - `@dependabot ignore this major version` will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this minor version` will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this dependency` will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)