Added a timezone component to the filter by LastModified test to see if that is what causes the test to fail on the CI build

Author: Niall Langley

DataPipelineTools.Tests/DataLake/DataLakeServiceTests/GetItemsAsyncTests.cs

@@ -213,7 +213,7 @@ public void Given_DirectoryPathWithIncorrectCaseAndIgnoreDirectoryCaseIsTrue_Whe
             new object[] { "raw/api", nameof(DataLakeItem.Url), "like:.+raw\\/api.+", 8}, // 6 files + 2 directories
             new object[] { "raw/api", nameof(DataLakeItem.IsDirectory), "eq:true", 2},
             new object[] { "raw/api", nameof(DataLakeItem.IsDirectory), "eq:false", 6},
-            new object[] { "raw/api", nameof(DataLakeItem.LastModified), "ge:2021-01-04T14:00:00", 2},
+            new object[] { "raw/api", nameof(DataLakeItem.LastModified), "ge:2021-01-04T14:00:00+00:00", 2},
         };
         [TestCaseSource(nameof(Filters))]
         public void Given_Filter_Should_ReturnRecordsMatchingFilter(string directory, string filterProperty, string filterExpression, int expectedFileCount)