Bump SauceLabs.Visual and Selenium.WebDriver in /dotnet-nunit

Bumps [SauceLabs.Visual](https://github.com/saucelabs/visual-sdks) and Selenium.WebDriver. These dependencies needed to be updated together.

Updates `SauceLabs.Visual` from 0.12.0 to 0.17.0
- [Release notes](https://github.com/saucelabs/visual-sdks/releases)
- [Commits](saucelabs/visual-sdks@java-0.12.0...dotnet-0.17.0)

Updates `Selenium.WebDriver` from 4.19.0 to 4.0.0

---
updated-dependencies:
- dependency-name: SauceLabs.Visual
  dependency-version: 0.17.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: Selenium.WebDriver
  dependency-version: 4.0.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

dotnet-nunit/SauceLabs.Visual.Example/SauceLabs.Visual.Example.csproj

@@ -13,7 +13,7 @@
     <PackageReference Include="NUnit" Version="3.13.2" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
     <PackageReference Include="coverlet.collector" Version="6.0.2" />
-    <PackageReference Include="SauceLabs.Visual" Version="0.12.0" />
+    <PackageReference Include="SauceLabs.Visual" Version="0.17.0" />
     <PackageReference Include="Selenium.WebDriver" Version="4.19.0" />
     <PackageReference Include="WebDriverManager" Version="2.17.2" />
     <PackageReference Include="MSTest.TestAdapter" Version="3.3.0" />