Update dependency Azure.Core to 1.43.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
Azure.Core (source)	1.42.0 -> 1.43.0

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Release Notes

Azure/azure-sdk-for-net (Azure.Core)

v1.43.0

Compare Source

1.43.0 (2024-09-12)

Other Changes

• Upgraded System.Text.Json package dependency to 6.0.9 (#​45416).
• Added a new constructor on AzureEventSourceListener for callers that don't need the formatted message (#​45191).
• Remove unused callback from HttpRequestMessage options in HttpClientTransport transport (#​45696).
• Added RequiresUnreferencedCode and RequiresDynamicCode attributes to ToDynamicFromJson extension methods and DynamicData APIs to support AOT scenarios (#​45417).

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