[ksqlDB.RestApi.Client]: build fix

Author: tomasfabian

.github/workflows/dotnet.yml

@@ -14,10 +14,10 @@ jobs:
 
     - uses: actions/checkout@v3
 
-    # - name: Setup .NET 8.0
-    #   uses: actions/setup-dotnet@v2
-    #   with:
-    #     dotnet-version: 8.0.x
+    - name: Setup .NET 8.0
+      uses: actions/setup-dotnet@v2
+      with:
+        dotnet-version: 8.0.205
 
     - name: Setup .NET 7.0
       uses: actions/setup-dotnet@v2

.github/workflows/dotnetblazor.yml

@@ -14,10 +14,10 @@ jobs:
 
     - uses: actions/checkout@v3
 
-    # - name: Setup .NET 8.0
-    #   uses: actions/setup-dotnet@v2
-    #   with:
-    #     dotnet-version: 8.0.x
+    - name: Setup .NET 8.0
+      uses: actions/setup-dotnet@v2
+      with:
+        dotnet-version: 8.0.205
 
     - name: Setup .NET 7.0
       uses: actions/setup-dotnet@v2