chore(deps): update dependency azure-core to v1.39.0

[red-hat-konflux]

This PR contains the following updates:

Package	Change	Age	Confidence
azure-core (source)	==1.38.0 → ==1.39.0

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Release Notes

Azure/azure-sdk-for-python (azure-core)

v1.39.0

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Breaking Changes

• Changed the previously undocumented azure_cloud setting environment variable from AZURE_CLOUD to AZURE_SDK_CLOUD_CONF.

v1.38.3

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Bugs Fixed

• Fixed PipelineClient.format_url to preserve trailing slash in the base URL when the URL template is query-string-only (e.g., ?key=value). #​45365
• Fixed SensitiveHeaderCleanupPolicy to persist the insecure_domain_change flag across retries after a cross-domain redirect. #​45518

Other Changes

• Added jitter to token refresh timing in BearerTokenCredentialPolicy and AsyncBearerTokenCredentialPolicy to prevent simultaneous token refresh attempts across multiple processes. This helps mitigate the thundering herd problem during token refresh operations. #​43720

v1.38.2

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Bugs Fixed

• Fixed PipelineClient.format_url to preserve the leading slash when the URL template starts with /?. #​45218

v1.38.1

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Bugs Fixed

• Fixed PipelineClient.format_url to avoid adding trailing slashes when the URL template contains only query parameters. #​45044

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Documentation

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