build(deps): bump DiffEngine from 8.5.3 to 9.1.0 in /Sample

[dependabot[bot]]

Bumps DiffEngine from 8.5.3 to 9.1.0.

Release notes

Sourced from DiffEngine's releases.

9.1.0

As part of this release we had 22 commits which resulted in 2 issues being closed.

Bug

• [#282](VerifyTests/DiffEngine#282) better error handling when accepting or discarding files

Feature

• [#283](VerifyTests/DiffEngine#283) Remove files beyond compare doesnt do a good job handling

9.0.5

As part of this release we had 27 commits which resulted in 1 issue being closed.

Improvement

• [#279](VerifyTests/DiffEngine#279) do not throw an exception when the payload content is empty

9.0.4

As part of this release we had 16 commits which resulted in 1 issue being closed.

Improvement

• [#273](VerifyTests/DiffEngine#273) Dont scan for tools on ci

Commits

• 26445e1 Update Directory.Build.props
• 39057bb Remove files beyond compare doesnt do a good job handling (#283)
• 6f5b144 better error handling when accepting or discarding files (#282)
• 2803a2b Microsoft.NET.Test.Sdk
• cde6b90 Update global.json
• 203a9a6 refs
• 3f2e942 refs
• ec44d1c refs
• 5ee8b1c Update DiffEngineTray.Tests.csproj
• 0785b59 Update Tracker.cs
• Additional commits viewable in compare view

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