Build WebKitGTK+ with -DENABLE_BUBBLEWRAP_SANDBOX=OFF

Since we are building a flatpak runtime, and flatpak is incompatible
with WebKit's new bubblewrap sandbox, we should turn it off.
9 jobs for mcatanzaro/webkit-2-23-1 in 190 minutes and 12 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Track
passed #153346
track

00:07:49

 
  Build
canceled #153349
aarch64 allowed to fail
build-gnome-core-aarch64

03:02:20

canceled #153350
armhf allowed to fail
build-gnome-core-arm

03:02:23

failed #153348
packet allowed to fail
build-gnome-core-i386

01:42:50

failed #153347
packet
build-gnome-core-x86_64

02:43:02

 
  Flatpak
canceled #153353
aarch64
flatpak-aarch64

canceled #153354
armhf
flatpak-arm

canceled #153352
packet
flatpak-i386

canceled #153351
packet
flatpak-x86_64

 
Name Stage Failure
failed
build-gnome-core-x86_64 Build
  Build Queue: processed 177, skipped 308, failed 1   
Push Queue: processed 34, skipped 308, failed 143


Uploading artifacts...
logs: found 2838 matching files
project.refs: found 1 matching files

Uploading artifacts to coordinator... ok
id=153347 responseStatus=201 Created token=zvSxuUi-
ERROR: Job failed: exit code 1
failed
build-gnome-core-i386 Build
  Build Queue: processed 143, skipped 308, failed 2   
Push Queue: processed 37, skipped 308, failed 106


Uploading artifacts...
logs: found 2695 matching files
project.refs: found 1 matching files

Uploading artifacts to coordinator... ok
id=153348 responseStatus=201 Created token=L2Q12QAY
ERROR: Job failed: exit code 1