Skip tests known to fail on 15.0

These tests are passing on 15.1: rdar://139217313

Author: felipepiovezan

lldb/test/API/lang/swift/foundation_value_types/measurement/TestSwiftFoundationTypeMeasurement.py

@@ -15,6 +15,7 @@
 from lldbsuite.test import lldbutil
 
 
+@skipIf(macos_version=["=", "15.0"])
 class TestCase(TestBase):
     @swiftTest
     @skipUnlessDarwin

lldb/test/API/lang/swift/nsarray_code_running_formatter/TestSwiftNSArrayCodeRunningFormatter.py

@@ -12,5 +12,8 @@
 import lldbsuite.test.lldbinline as lldbinline
 from lldbsuite.test.decorators import *
 
-lldbinline.MakeInlineTest(__file__, globals(),
-                          decorators=[swiftTest,skipUnlessDarwin])
+lldbinline.MakeInlineTest(
+    __file__,
+    globals(),
+    decorators=[swiftTest, skipUnlessDarwin, skipIf(macos_version=["=", "15.0"])],
+)