Update to 9.5.15

Changes: https://get.typo3.org/release-notes/9.5.15

		https://typo3.org/article/typo3-core-9-5-15-and-8-7-32-maintenance-releases-published

PR: 245203
Submitted by: Helmut Ritter <freebsd-ports@charlieroot.de> (maintainer)