Bump Autofac from 8.1.0 to 8.1.1 in /src

[dependabot[bot]]

Bumps Autofac from 8.1.0 to 8.1.1.

Release notes

Sourced from Autofac's releases.

v8.1.1

What's Changed

• Fix boxing in ResolveRequest.operator==() (#1430, thanks @​SergeiPavlov!)
• Remove redundant null-checking in resolution extensions (#1428, thanks @​SergeiPavlov!)
• Fix #1427: Ensure WithProperty registration methods consistently allow null values (#1428)

Full Changelog: https://github.com/autofac/Autofac/compare/v8.1.0...v8.1.1

Commits

• d2ed00a Make async disposal test more deterministic.
• edb63ea Semver => 8.1.1 for bug fixes.
• 35c1bd4 Merge pull request #1429 from SergeiPavlov/ane
• a576e40 Simplify .RegisterCallback()
• 66cbfda Remove redundant null-cheking in RegistrationExtensions
• 7a3d538 Revert ArgumentNullException.ThrowIsNull()
• e4f1bc6 Merge pull request #1428 from autofac/feature/with-property-consistency
• ebc0386 Merge pull request #1430 from SergeiPavlov/ResolveRequest
• 59ad08f Fix boxing in ResolveRequest.operator==()
• 3e233e2 Avoid redundant null-checking
• Additional commits viewable in compare view

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