build: update workflows to use dotnet 8

Signed-off-by: Kenny Pflug <kenny.pflug@live.de>

Author: feO2x

.github/workflows/build-and-test.yml

@@ -18,7 +18,7 @@ jobs:
     - name: Setup .NET
       uses: actions/setup-dotnet@v3
       with:
-        dotnet-version: 7.0.x
+        dotnet-version: 8.0.x
     - name: Restore dependencies
       run: dotnet restore ./Code/Light.GuardClauses.AllProjects.sln
     - name: Build Analyzer

.github/workflows/release-on-nuget.yml

@@ -8,7 +8,7 @@ on:
       dotnetVersion:
         description: "The version of .NET to use"
         required: false
-        default: "7.0.x"
+        default: "8.0.x"
 
 jobs:
   release-to-nuget:
@@ -20,7 +20,7 @@ jobs:
       - name: Setup .NET
         uses: actions/setup-dotnet@v3
         with:
-          dotnet-version: ${{ github.event.inputs.dotnetVersion || '7.0.x' }}
+          dotnet-version: ${{ github.event.inputs.dotnetVersion || '8.0.x' }}
       - name: Prepare SNK file
         env:
           LIGHT_GUARDCLAUSES_SNK: ${{ secrets.LIGHT_GUARDCLAUSES_SNK }}