Update actions/checkout action to v4 #1430

Job	Run time
Generate job matrix	9s
Check Backwards Compatibility (locked, 8.1, ubuntu-latest)	18s
Composer Require Checker (locked, 8.1, ubuntu-latest)	19s
Check Backwards Compatibility (locked, 8.2, ubuntu-latest)	25s
Composer Require Checker (locked, 8.2, ubuntu-latest)	36s
Check Backwards Compatibility (locked, 8.3, ubuntu-latest)	2m 13s
Composer Require Checker (locked, 8.3, ubuntu-latest)	25s
QA Checks (PHPUnit [8.1, locked], ubuntu-latest, laminas/laminas-continuous-integration-action@v1...	54s
QA Checks (PHPUnit [8.1, lowest], ubuntu-latest, laminas/laminas-continuous-integration-action@v1...	55s
QA Checks (PHPUnit [8.1, latest], ubuntu-latest, laminas/laminas-continuous-integration-action@v1...	55s
QA Checks (PHPUnit [8.2, lowest], ubuntu-latest, laminas/laminas-continuous-integration-action@v1...	28s
QA Checks (PHPUnit [8.2, latest], ubuntu-latest, laminas/laminas-continuous-integration-action@v1...	26s
QA Checks (PHPUnit [8.3, lowest], ubuntu-latest, laminas/laminas-continuous-integration-action@v1...	54s
QA Checks (PHPUnit [8.3, latest], ubuntu-latest, laminas/laminas-continuous-integration-action@v1...	55s
QA Checks (Infection [8.1, locked], ubuntu-latest, laminas/laminas-continuous-integration-action@...	2m 31s
QA Checks (PHPCodeSniffer [8.1, locked], ubuntu-latest, laminas/laminas-continuous-integration-ac...	51s
QA Checks (Psalm [8.1, locked], ubuntu-latest, laminas/laminas-continuous-integration-action@v1, ...	1m 1s
	14m 15s

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