drirc: add Spectacle, Falkon to a-sync blacklist

Spectacle is the plasma screenshot utility

Falkon is a KDE web browser that should succeed Konqueror
15 jobs for !609 with master in 10 minutes and 56 seconds (queued for 1 second)
latest detached
Status Job ID Name Coverage
  Containers Build
passed #235235
ubuntu

00:00:21

 
  Build+Test
passed #235236
autotools

00:10:33

passed #235238
meson-clang

00:09:25

passed #235244
meson-gallium-clover-llvm

00:06:47

passed #235245
meson-gallium-clover-llvm39

00:06:34

passed #235243
meson-gallium-drivers-other

00:08:03

passed #235242
meson-gallium-radeonsi

00:06:10

passed #235246
meson-gallium-st-other

00:05:06

passed #235237
meson-gallium-swr

00:09:10

passed #235241
meson-glvnd

00:06:45

passed #235240
meson-loader-classic-dri

00:07:05

passed #235239
meson-vulkan

00:04:42

passed #235248
scons-llvm

00:04:00

passed #235247
scons-nollvm

00:06:06

passed #235249
scons-swr

00:08:19