No need for setup-dotnet on Ubuntu these days (https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2204-Readme.md#net-tools)

Author: lukebakken

.github/workflows/build-test.yaml

@@ -136,10 +136,6 @@ jobs:
         uses: actions/checkout@v4
         with:
           submodules: true
-      - name: Setup .NET
-        uses: actions/setup-dotnet@v4
-        with:
-          dotnet-version: 6.x
       - name: Cache NuGet packages
         uses: actions/cache@v4
         with:
@@ -174,10 +170,6 @@ jobs:
         uses: actions/checkout@v4
         with:
           submodules: true
-      - name: Setup .NET
-        uses: actions/setup-dotnet@v4
-        with:
-          dotnet-version: 6.x
       - name: Download Build (Debug)
         uses: actions/download-artifact@v4
         with:
@@ -215,10 +207,6 @@ jobs:
         uses: actions/checkout@v4
         with:
           submodules: true
-      - name: Setup .NET
-        uses: actions/setup-dotnet@v4
-        with:
-          dotnet-version: 8.x
       - name: Download Build (Debug)
         uses: actions/download-artifact@v4
         with: