test_ukify: raise timeout

With a sufficiently large initrd, the tests take 25 s on my laptop.
Normally, they'd be quicker, but since we use what we find on the
system, we don't control this. Let's raise the timeout to reduce the
chances of a spurious failure.

(cherry picked from commit 6bc99ec)
(cherry picked from commit 2018cce)

Author: keszybz

src/ukify/test/meson.build

@@ -15,5 +15,6 @@ if want_ukify and want_tests != 'false'
         test('test-ukify',
              files('test_ukify.py'),
              args: args,
-             env : test_env)
+             env : test_env,
+             timeout : 120)
 endif