Update axe-core to 4.11.1 via Deque.AxeCore.Selenium

[v-sohmondal]

Details

Migrate the C# Selenium WebDriver sample from the deprecated Selenium.Axe package to the official Deque-maintained Deque.AxeCore.Selenium and Deque.AxeCore.Commons packages (v4.11.1).

Motivation

Update axe-core to 4.11.1. The Selenium.Axe package is deprecated as Deque has officially taken over the .NET bindings. See dequelabs/axe-core-nuget.

Context

Migration steps followed from Deque.AxeCore.Selenium - Migrating from Selenium.Axe.

• Package changes: Replaced Selenium.Axe 4.0.21 with Deque.AxeCore.Commons 4.11.1 and Deque.AxeCore.Selenium 4.11.1.
• Using directives: Replaced using Selenium.Axe; with using Deque.AxeCore.Commons; and using Deque.AxeCore.Selenium;.
• API differences handled:
  • AxeResult.Error was removed; any errors that would have appeared there are now reported as exceptions.
  • AxeBuilder.Include(string, string) (iframe + element selector) is not supported. Replaced with AxeBuilder.Include(AxeSelector) using new AxeSelector(elementSelector, ancestorFrames).
• Comment updates: Updated stale references from Selenium.Axe to Deque.AxeCore.Selenium and corrected .NET Framework version floor from 4.5+ to 4.7.1+.

Pull request checklist

• If this PR addresses an existing issue, it is linked: Fixes #0000
• New sample content is commented at a similar verbosity as existing content
• All updated/modified sample code builds and runs in at least one PR/CI build
• PR checks for builds named [failing example] ... pass in the PR build, then confirm they fail in the CI build