chore(deps): update dependency flagsmith to v5.3.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
Flagsmith (source)	5.2.2 -> 5.3.0

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Release Notes

Flagsmith/flagsmith-dotnet-client (Flagsmith)

v5.3.0

What's Changed

• feat: Offline mode by @​novakzaballa in https://github.com/Flagsmith/flagsmith-dotnet-client/pull/86
• feat: Identity overrides in local evaluation mode by @​khvn26 in https://github.com/Flagsmith/flagsmith-dotnet-client/pull/90
• feat: Implement multi-threading support for analytics Processor by @​novakzaballa in https://github.com/Flagsmith/flagsmith-dotnet-client/pull/95
• chore(infra): Publish NuGet package automatically by @​khvn26 in https://github.com/Flagsmith/flagsmith-dotnet-client/pull/97
• chore(infra): test against dotnet core 8 by @​matthewelwell in https://github.com/Flagsmith/flagsmith-dotnet-client/pull/91
• chore: Delete example by @​novakzaballa in https://github.com/Flagsmith/flagsmith-dotnet-client/pull/92

Full Changelog: Flagsmith/flagsmith-dotnet-client@v5.2.2...v5.3.0

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[askpt]

This update brings some build issues. It might be worth taking a look into it.
Error: System.Exception : ValueError: environmentKey is required

[matthewelwell]

Thanks @askpt - we (Flagsmith) will take a look 👍

[matthewelwell]

Should be fixed by #186

[askpt]

The build is working now! Thanks :)