Update contracts

Author: yash2710

Microsoft.Azure.Cosmos/tests/Microsoft.Azure.Cosmos.Tests/Contracts/DotNetPreviewSDKAPI.net6.json

@@ -285,6 +285,22 @@
       },
       "NestedTypes": {}
     },
+    "Microsoft.Azure.Cosmos.ChangeFeedProcessor;System.Object;IsAbstract:True;IsSealed:False;IsInterface:False;IsEnum:False;IsClass:True;IsValueType:False;IsNested:False;IsGenericType:False;IsSerializable:False": {
+      "Subclasses": {},
+      "Members": {
+        "System.Threading.Tasks.Task ImportLeasesAsync(System.Collections.Generic.IReadOnlyList`1[System.Text.Json.JsonElement], Boolean, System.Threading.CancellationToken)": {
+          "Type": "Method",
+          "Attributes": [],
+          "MethodInfo": "System.Threading.Tasks.Task ImportLeasesAsync(System.Collections.Generic.IReadOnlyList`1[System.Text.Json.JsonElement], Boolean, System.Threading.CancellationToken);IsAbstract:False;IsStatic:False;IsVirtual:True;IsGenericMethod:False;IsConstructor:False;IsFinal:False;"
+        },
+        "System.Threading.Tasks.Task`1[System.Collections.Generic.IReadOnlyList`1[System.Text.Json.JsonElement]] ExportLeasesAsync(System.Threading.CancellationToken)": {
+          "Type": "Method",
+          "Attributes": [],
+          "MethodInfo": "System.Threading.Tasks.Task`1[System.Collections.Generic.IReadOnlyList`1[System.Text.Json.JsonElement]] ExportLeasesAsync(System.Threading.CancellationToken);IsAbstract:False;IsStatic:False;IsVirtual:True;IsGenericMethod:False;IsConstructor:False;IsFinal:False;"
+        }
+      },
+      "NestedTypes": {}
+    },
     "Microsoft.Azure.Cosmos.Container;System.Object;IsAbstract:True;IsSealed:False;IsInterface:False;IsEnum:False;IsClass:True;IsValueType:False;IsNested:False;IsGenericType:False;IsSerializable:False": {
       "Subclasses": {},
       "Members": {