Bump symfony/mailer from 7.4.8 to 7.4.12 #7417

Job	Run time
tests (postgres, ubi, local)	14m 2s
tests (postgres, debian, minio)	16m 53s
build-images (ubuntu-24.04, debian)	3m 12s
build-images (ubuntu-24.04-arm, ubi)	2m 53s
build-images (ubuntu-24.04-arm, debian)	3m 37s
build-images (ubuntu-24.04, ubi)	2m 32s
tests (postgres, debian, local)	19m 58s
	1h 3m 7s

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