Fix detection of MLT on Windows
on today build there is this error: 06:37:48 Could not find libs/frei0r-bigsh0t=2.3 in https://files.kde.org/craft/master/Qt_5.15.2-4/windows/mingw_64/gcc/RelWithDebInfo
This should be a temporary error. Usually the package will be build, if it is not found in the cache, but:
06:38:01 Resolving bitbucket.org (bitbucket.org)... failed: This is usually a temporary error during hostname resolution and means that the local server did not receive a response from an authoritative server. .
Maybe bitbucket was down…