[ReleasePR synapse] swagger correctness (#2538)

Create to sync Azure/azure-rest-api-specs#20147
[ReCreate this PR](https://github.com/azure-resource-manager-schemas/compare/main...azure-sdk:sdkAuto/synapse?expand=1)

Author: msftbot[bot]

schemas/2021-06-01-preview/Microsoft.Synapse.json

@@ -2232,6 +2232,17 @@
           ],
           "description": "Dynamic Executor Allocation Properties"
         },
+        "isAutotuneEnabled": {
+          "oneOf": [
+            {
+              "type": "boolean"
+            },
+            {
+              "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
+            }
+          ],
+          "description": "Whether autotune is required or not."
+        },
         "isComputeIsolationEnabled": {
           "oneOf": [
             {

schemas/2021-06-01/Microsoft.Synapse.json

@@ -1808,6 +1808,17 @@
           ],
           "description": "Dynamic Executor Allocation Properties"
         },
+        "isAutotuneEnabled": {
+          "oneOf": [
+            {
+              "type": "boolean"
+            },
+            {
+              "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
+            }
+          ],
+          "description": "Whether autotune is required or not."
+        },
         "isComputeIsolationEnabled": {
           "oneOf": [
             {
@@ -3114,6 +3125,11 @@
         "type": {
           "type": "string",
           "description": "Type of the library."
+        },
+        "uploadedTimestamp": {
+          "type": "string",
+          "format": "date-time",
+          "description": "The last update time of the library."
         }
       },
       "description": "Library/package information of a Big Data pool powered by Apache Spark"