Update dependency Microsoft.Extensions.Configuration.FileExtensions to v7 - autoclosed

[mend-for-github-com[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
Microsoft.Extensions.Configuration.FileExtensions (source)	3.0.0 -> 7.0.0

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Release Notes

dotnet/runtime

### [`v7.0.0`](https://togithub.com/dotnet/runtime/releases/tag/v7.0.0): .NET 7.0.0 [Release](https://togithub.com/dotnet/core/tree/v7.0.0) ### [`v6.0.0`](https://togithub.com/dotnet/runtime/releases/tag/v6.0.0): .NET 6.0 [Release](https://togithub.com/dotnet/core/releases/tag/v6.0.0)

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Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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• [ ] If you want to rebase/retry this PR, check this box