Try it out on more dotnet versions

Author: drewcassidy

.github/workflows/internal-test-plugin-nuget.yml

@@ -13,7 +13,11 @@ env:
   NuGetDirectory: ${{ github.workspace}}/nuget
 
 jobs:
+
   build:
+    strategy:
+      matrix:
+        dotnet-version: [ 5.x, 7.x, 9.x ]
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
@@ -40,10 +44,11 @@ jobs:
           ksp-zip-url: https://github.com/KSPModdingLibs/KSPLibs/raw/main/KSP-1.12.5.zip
           working-directory: ${{ env.TESTDIR }}
           solution-file-path: plugin-mod-nuget.csproj
+          dotnet-version: ${{ matrix.dotnet-version }}
         env:
           KSPBuildToolsVersion: ${{ inputs.package-version }}
 
       - uses: ./.github/actions/assemble-release
         with:
           artifacts: ${{ env.TESTDIR }}/GameData
-          output-file-name: plugin-mod-nuget
+          output-file-name: plugin-mod-nuget-${{ matrix.dotnet-version }}