Do not run tests on windows

Mocked filesystem does not work properly with
paths like /etc/os-release.

No point in running them on Windows

Author: kcieplak

Tests/SWBUtilTests/LinuxDistributionTests.swift

@@ -14,8 +14,7 @@ import Foundation
 import Testing
 import SWBTestSupport
 import SWBUtil
-
-@Suite
+@Suite(.skipHostOS(.windows))
 fileprivate struct LinuxDistributionTests {
 
     /// Test helper to create a mock filesystem with specific files