Dockerfile: update xdebug from 3.1.4 to 3.1.5
Dockerfile: update xdebug from 3.1.4 to 3.1.5

https://xdebug.org/announcements/2022-06-06

smrealms/smr,smrealms/smr,smrealms/smr,hemberger/smr,hemberger/smr,hemberger/smr,hemberger/smr