Update actions/setup-dotnet action to v3 (#26)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/ci.yml

@@ -41,7 +41,7 @@ jobs:
       - name: Checkout sources
         uses: actions/checkout@v3
       - name: Setup .NET
-        uses: actions/setup-dotnet@v2
+        uses: actions/setup-dotnet@v3
       - uses: actions/download-artifact@v3
         with:
           name: Code coverage ubuntu-latest
@@ -76,7 +76,7 @@ jobs:
         with:
           fetch-depth: 0
       - name: Setup .NET
-        uses: actions/setup-dotnet@v2
+        uses: actions/setup-dotnet@v3
       - name: Create packages
         run: dotnet pack --configuration Release --output ./packages
       - name: Upload a Build Artifact
@@ -95,7 +95,7 @@ jobs:
         with:
           fetch-depth: 0
       - name: Setup .NET
-        uses: actions/setup-dotnet@v2
+        uses: actions/setup-dotnet@v3
       - uses: actions/download-artifact@v3
         with:
           name: NuGet packages