tests: fix libwmf version

The current latest version is 0.2.8, but the test expects 3.0. 0.2.8 was
released in 2011, so it seems quite safe to require the latest version.

test cases/frameworks/21 libwmf/meson.build

@@ -1,6 +1,6 @@
 project('libwmf test', 'c')
 
-libwmf_dep = dependency('libwmf', version : '>=3.0')
+libwmf_dep = dependency('libwmf', version : '>= 0.2.8')
 libwmf_ver = libwmf_dep.version()
 assert(libwmf_ver.split('.').length() > 1, 'libwmf version is "@0@"'.format(libwmf_ver))
 message('libwmf version is "@0@"'.format(libwmf_ver))