Bump phpunit/phpunit from 10.2.2 to 10.2.3

Bumps phpunit/phpunit from 10.2.2 to 10.2.3.

Changelog

Sourced from phpunit/phpunit's changelog.

[10.2.3] - 2023-06-30

Changed

• #5419: Allow empty <extensions> element in XML configuration

Commits

• 35c8cac Prepare release
• 8fda4fe Tweak
• 5531cac Merge branch '9.6' into 10.2
• 47e0211 Merge branch '8.5' into 9.6
• c8bf4dd Update tools
• f9f0bc6 Merge branch '9.6' into 10.2
• 9683af4 Merge branch '8.5' into 9.6
• 451e813 Update tools
• 3fb0b7f Merge branch '9.6' into 10.2
• 2a2a3b7 Simplify
• Additional commits viewable in compare view

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