Update OmniSharp to fix issue with Unity projects not being loaded

Author: DustinCampbell

package.json

@@ -123,7 +123,7 @@
     },
     {
       "description": "OmniSharp (.NET 4.6 / x86)",
-      "url": "https://omnisharpdownload.blob.core.windows.net/ext/omnisharp-win-x86-1.19.0.zip",
+      "url": "https://omnisharpdownload.blob.core.windows.net/ext/omnisharp-win-x86-1.19.1.zip",
       "installPath": "./bin/omnisharp",
       "platforms": [
         "win32"
@@ -135,7 +135,7 @@
     },
     {
       "description": "OmniSharp (.NET 4.6 / x64)",
-      "url": "https://omnisharpdownload.blob.core.windows.net/ext/omnisharp-win-x64-1.19.0.zip",
+      "url": "https://omnisharpdownload.blob.core.windows.net/ext/omnisharp-win-x64-1.19.1.zip",
       "installPath": "./bin/omnisharp",
       "platforms": [
         "win32"
@@ -147,7 +147,7 @@
     },
     {
       "description": "OmniSharp (Mono 4.6)",
-      "url": "https://omnisharpdownload.blob.core.windows.net/ext/omnisharp-mono-1.19.0.zip",
+      "url": "https://omnisharpdownload.blob.core.windows.net/ext/omnisharp-mono-1.19.1.zip",
       "installPath": "./bin/omnisharp",
       "platforms": [
         "darwin",