Use .NET Core sdk 8 instead of 3 + 7

Author: 0xced

azure-pipelines.yml

@@ -17,15 +17,10 @@ jobs:
       vmImage: 'ubuntu-22.04'
     steps:
     - task: UseDotNet@2
-      displayName: 'Use .NET Core sdk 3'
+      displayName: 'Use .NET Core sdk 8'
       inputs:
         packageType: sdk
-        version: 3.1.100
-    - task: UseDotNet@2
-      displayName: 'Use .NET Core sdk 7'
-      inputs:
-        packageType: sdk
-        version: 7.0.202
+        version: 8.0.302
     - script: ./build.sh
       displayName: 'Run build and tests'