Do not run sample projects as tests (#158)

Author: tobias-tengler

.github/workflows/test-matrix.yml

@@ -18,7 +18,7 @@ jobs:
       - uses: actions/checkout@v2
       - id: set-matrix
         run: |
-          PROJECTS=$(find . \( -name '*.Tests.csproj' -o -name '*.Sample.csproj' \) | sed 's|.*/\([^/]*\)\.csproj|\1|' | jq -R -s -c 'split("\n")[:-1]')
+          PROJECTS=$(find . -name '*.Tests.csproj' | sed 's|.*/\([^/]*\)\.csproj|\1|' | jq -R -s -c 'split("\n")[:-1]')
           FRAMEWORKS='["net8.0", "net9.0","net10.0"]'
           MATRIX=$(jq -n \
             --argjson projects "$PROJECTS" \