Update codeql-analysis.yml

Author: Havunen

.github/workflows/codeql-analysis.yml

@@ -40,6 +40,15 @@ jobs:
     - name: Checkout repository
       uses: actions/checkout@v3
 
+    - name: Setup dotnet
+      uses: actions/setup-dotnet@v3
+      with:
+        dotnet-version: | 
+         6.x
+         7.x
+         8.x
+         9.x
+           
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
       uses: github/codeql-action/init@v2