tests: samples: Bump the tests timeout

Some tests require a large amount of preparsing (some playlist tests),
which, when run on wine, can be extremely slow to process, causing the
overall test duration to exceed 10s.
4 jobs for fix_playlist_test in 11 minutes and 24 seconds
Status Job ID Name Coverage
  Test
passed #286061
amd64 debian
asan-ubsan

00:11:24

passed #286058
amd64 debian
linux

00:09:05

passed #286059
win32
win32

00:10:10

passed #286060
win64
win64

00:11:24