build(deps): bump actions/setup-dotnet from 1.8.0 to 2.1.0 (#46)

Bumps [actions/setup-dotnet](https://github.com/actions/setup-dotnet) from 1.8.0 to 2.1.0.
- [Release notes](https://github.com/actions/setup-dotnet/releases)
- [Commits](actions/setup-dotnet@v1.8.0...v2.1.0)

---
updated-dependencies:
- dependency-name: actions/setup-dotnet
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/ci-build.yml

@@ -24,12 +24,12 @@ jobs:
         lfs: true
 
     - name: Install .NET Core
-      uses: actions/setup-dotnet@v1.8.0
+      uses: actions/setup-dotnet@v2.1.0
       with:
         dotnet-version: 3.1.x
 
     - name: Install .NET 5
-      uses: actions/setup-dotnet@v1.8.0
+      uses: actions/setup-dotnet@v2.1.0
       with:
         dotnet-version: 5.0.x