Fix build against Qt 5.14

2 jobs for !28 with work/serverside-itemsync in 49 minutes and 15 seconds (queued for 2 seconds)
latest detached
Status Job ID Name Coverage
  Build
passed #66402
build_clazy_clang_tidy

00:45:18

passed #66401
linux kf5-qt5 qt5.12

00:34:15

1.0%