Merge pull request #77 from microsoft/users/meng/netsdk90312

Update SDK version from 9.0.311 to 9.0.312

Author: Michael-Eng

global.json

@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "9.0.311",
+    "version": "9.0.312",
     "rollForward": "patch",
     "allowPrerelease": false
   },