Fix linux-specific test failures

Signed-off-by: sweeneys <sweeneys@amazon.com>

AutomatedTesting/Gem/PythonTests/smoke/test_CLITool_SerializeContextTools_Works.py

@@ -13,7 +13,10 @@ import os
 import pytest
 import subprocess
 
+import ly_test_tools
 
+
+@pytest.mark.skipif(not ly_test_tools.WINDOWS, "SerializeContextTools only available on Windows")
 @pytest.mark.SUITE_smoke
 class TestCLIToolSerializeContextToolsWorks(object):
     def test_CLITool_SerializeContextTools_Works(self, build_directory):

Tools/LyTestTools/tests/unit/test_editor_test_utils.py

@@ -74,9 +74,9 @@ class TestEditorTestUtils(unittest.TestCase):
     def test_RetrieveCrashOutput_CrashLogNotExists_ReturnsError(self, mock_retrieve_log_path):
         mock_retrieve_log_path.return_value = 'mock_log_path'
         mock_workspace = mock.MagicMock()
-        expected = "-- No crash log available --\n[Errno 2] No such file or directory: 'mock_log_path\\\\error.log'"
+        error_message = "No crash log available"
 
-        assert expected == editor_test_utils.retrieve_crash_output(0, mock_workspace, 0)
+        assert error_message in editor_test_utils.retrieve_crash_output(0, mock_workspace, 0)
 
     @mock.patch('os.path.getmtime', mock.MagicMock())
     @mock.patch('os.rename')