Updated .NET Core version

.github/workflows/build.yml

@@ -22,7 +22,7 @@ jobs:
     - name: Setup .NET Core
       uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: 3.0.100-preview7-012821
+        dotnet-version: 3.0.100
     - name: Build Release
       run: dotnet build --configuration Release
     - name: Test Release

global.json

@@ -1,8 +1,8 @@
 {
   "tools": {
-    "dotnet": "3.0.100-preview7-012821"
+    "dotnet": "3.0.100"
   },
   "sdk": {
-    "version": "3.0.100-preview7-012821"
+    "version": "3.0.100"
   }
 }