Bump Microsoft.Testing.Extensions.CodeCoverage from 18.4.1 to 18.5.1#19

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dependabot/nuget/src/WebSocket.Rx.IntegrationTests/multi-0e779c9f1ast0o0/WebSocket.Rx:dependabot/nuget/src/WebSocket.Rx.IntegrationTests/multi-0e779c9f1aCopy head branch name to clipboard