Updated constraint def

Author: FlorianRappl

.github/workflows/ci.yml

@@ -16,10 +16,11 @@ jobs:
 
     - uses: actions/setup-dotnet@v3
       with:
-        dotnet-version: '5.0.x'
-        dotnet-version: '6.0.x'
-        dotnet-version: '7.0.x'
-        dotnet-version: '8.0.x'
+        dotnet-version: |
+          5.0.x
+          6.0.x
+          7.0.x
+          8.0.x
 
     - name: Build
       run: ./build.sh
@@ -32,10 +33,11 @@ jobs:
 
     - uses: actions/setup-dotnet@v3
       with:
-        dotnet-version: '5.0.x'
-        dotnet-version: '6.0.x'
-        dotnet-version: '7.0.x'
-        dotnet-version: '8.0.x'
+        dotnet-version: |
+          5.0.x
+          6.0.x
+          7.0.x
+          8.0.x
 
     - name: Build
       run: |