build(deps): bump actions/setup-dotnet from 2 to 3

Bumps [actions/setup-dotnet](https://github.com/actions/setup-dotnet) from 2 to 3.
- [Release notes](https://github.com/actions/setup-dotnet/releases)
- [Commits](actions/setup-dotnet@v2...v3)

---
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>

.github/workflows/ci.yml

@@ -14,6 +14,6 @@ jobs:
       Configuration: Release
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-dotnet@v2
+      - uses: actions/setup-dotnet@v3
       - run: dotnet restore
       - run: dotnet build --no-restore

.github/workflows/gh-pages.yml

@@ -21,7 +21,7 @@ jobs:
       PagesCname: gallery.bsdata.net
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-dotnet@v2
+      - uses: actions/setup-dotnet@v3
       - run: dotnet publish -c Release -o bin/publish -p:GHPages=true -p:GHPagesBase=https://${{ env.PagesCname }}
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v1