Instead of using 2020 use the technical limit of 32bit
which is 2038.

Resolves: #81940
Releases: master, 8.7
Change-Id: If0b1bee101b4917d7a974dd0e91f79bc24139227
Reviewed-on: https://review.typo3.org/53582


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Henning Liebe <h.liebe@neusta.de>
Reviewed-by: Sascha Rademacher <sascha.rademacher+typo3@gmail.com>
Reviewed-by: Sascha Egerer <sascha@sascha-egerer.de>
Reviewed-by: Steffen Frese <steffenf14@gmail.com>
Reviewed-by: Sonja Großewinkelmann <s.grossewinkelmann@neusta.de>
Reviewed-by: Joerg Boesche <typo3@joergboesche.de>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Andreas Fernandez <typo3@scripting-base.de>
Tested-by: Andreas Fernandez <typo3@scripting-base.de>