[TASK] Clear opcode cache on Core update

Resolves: #62966
Releases: master, 6.2
Change-Id: I54827b34c64cc6dbeb95e404d528ea3c1f0b14f9
Reviewed-on: http://review.typo3.org/34404
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>