Update dotnet build version.

Author: CaptnCodr

.github/workflows/main.yml

@@ -2,10 +2,10 @@ name: Build and Test
 
 on:
   push:
-    branches: 
+    branches:
     - master
   pull_request:
-    branches: 
+    branches:
     - master
 
 jobs:
@@ -15,17 +15,17 @@ jobs:
       fail-fast: false
       matrix:
         os: [windows-latest, macOS-latest, ubuntu-latest]
-        dotnet: [6.0.302]
+        dotnet: [6.0.400]
     runs-on: ${{ matrix.os }}
 
     steps:
     - uses: actions/checkout@v3
-    
+
     - name: Setup .NET
       uses: actions/setup-dotnet@v2
       with:
         dotnet-version: ${{ matrix.dotnet }}
-        
+
     - name: Restore dependencies
       run: dotnet restore
     - name: Build