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

Sources/SWBUtil/ProcessInfo.swift

@@ -265,7 +265,7 @@ public enum OperatingSystem: Hashable, Sendable {
                 return LinuxDistribution(kind: kind)
             }
         }
-        
+
         return nil
     }
 
@@ -419,3 +419,4 @@ extension FixedWidthInteger {
         return self != 0 ? self : other
     }
 }
+

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
@@ -431,4 +430,4 @@ fileprivate struct LinuxDistributionTests {
             #expect(distribution == nil)
         }
     }
-}
+}