Update projects to .NET 9.0

Update workflow

Author: b-straub

.github/workflows/Build.yml

@@ -17,10 +17,10 @@ jobs:
     steps:
     - uses: actions/checkout@v4
 
-    - name: Setup .NET 8.0
+    - name: Setup .NET 9.0
       uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: 8.0.x
+        dotnet-version: 9.0.x
 
     - name: Build DexieNET and DexieCloudNET
       run: dotnet build DexieCloudNET/DexieCloudNET.csproj -c Release

.github/workflows/PublishNuget.yml

@@ -15,10 +15,10 @@ jobs:
     steps:
     - uses: actions/checkout@v4
 
-    - name: Setup .NET 8.0
+    - name: Setup .NET 9.0
       uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: 8.0.x
+        dotnet-version: 9.0.x
 
     - name: Build DexieNET and DexieCloudNET
       run: dotnet build DexieCloudNET/DexieCloudNET.csproj -c Release