Bump pelago/emogrifier from 7.2.0 to 7.3.0 #188

Job	Run time
Debug	1s
Check files / Changed	13s
XML Syntax	0s
Code-QL / Analyze (javascript)	1m 46s
Composer / Validation	10s
PHP CS / Default	4m 33s
PHP CS / Ecg	2m 23s
PHP CS Fixer / Validation	4m 28s
PHP CS / PhpCompatibility	6m 35s
PHPStan / Analyze (ubuntu-latest, 7.4)	5m 20s
PHPStan / Analyze (ubuntu-latest, 8.4)	5m 14s
PHP Syntax	0s
Unit Tests (OpenMage)	0s
Rector	0s
	30m 43s

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