fix: Readded net8 for raven tests

Author: linkdotnet

.github/workflows/codeql.yml

@@ -29,6 +29,7 @@ jobs:
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: |
+            8.0.x
             9.0.x
 
       - name: Initialize CodeQL

.github/workflows/dotnet.yml

@@ -25,6 +25,7 @@ jobs:
       uses: actions/setup-dotnet@v4
       with:
         dotnet-version: |
+          8.0.x
           9.0.x
     - name: Restore dependencies
       run: dotnet restore