www/typo3-10: Update to 10.4.7

These versions are maintenance releases and contain bug fixes only.

For details about the releases, please see:

https://get.typo3.org/release-notes/10.4.7

PR: 249313
Submitted by: Helmut Ritter <freebsd-ports@charlieroot.de> (maintainer)
MFH: 2020Q3