Update dependency phpunit/phpunit to ^11.5.6 #1404

Job	Run time
Generate job matrix	8s
Mutation tests (locked, 8.2, ubuntu-latest)	32s
Mutation tests (locked, 8.3, ubuntu-latest)	27s
Mutation tests (locked, 8.4, ubuntu-latest)	27s
QA Checks (README Linting [8.2, locked], ubuntu-latest, laminas/laminas-continuous-integration-ac...	24s
QA Checks (PHPUnit [8.2, locked], ubuntu-latest, laminas/laminas-continuous-integration-action@v1...	22s
QA Checks (PHPUnit [8.2, lowest], ubuntu-latest, laminas/laminas-continuous-integration-action@v1...	25s
QA Checks (PHPUnit [8.2, latest], ubuntu-latest, laminas/laminas-continuous-integration-action@v1...	25s
QA Checks (PHPUnit [8.3, lowest], ubuntu-latest, laminas/laminas-continuous-integration-action@v1...	28s
QA Checks (PHPUnit [8.3, latest], ubuntu-latest, laminas/laminas-continuous-integration-action@v1...	28s
QA Checks (PHPUnit [8.4, lowest], ubuntu-latest, laminas/laminas-continuous-integration-action@v1...	29s
QA Checks (PHPUnit [8.4, latest], ubuntu-latest, laminas/laminas-continuous-integration-action@v1...	28s
QA Checks (PHPCodeSniffer [8.2, locked], ubuntu-latest, laminas/laminas-continuous-integration-ac...	21s
QA Checks (Psalm [8.2, locked], ubuntu-latest, laminas/laminas-continuous-integration-action@v1, ...	28s
	5m 52s

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