[DependencyMap] Add API Version 2025-05-01 and Update Parameters for Export Dependencies API

[aashima11]

1. Add new API version 2025-05-01 in Dependency Map service
2. Add new optional parameter 'applianceName' in Export Dependencies Request
3. Make parameter 'focussedMachineId' optional in Export Dependencies Request

[openapi-pipeline-app]

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[openapi-pipeline-app]

PR validation pipeline restarted successfully. If there is ApiView generated, it will be updated in this comment.

[github-actions]

API Change Check

APIView identified API level changes in this PR and created the following API reviews

Language	API Review for Package
Swagger	Microsoft.DependencyMap
TypeSpec	Microsoft.DependencyMap
Go	sdk/resourcemanager/dependencymap/armdependencymap

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