ACR Login: Use Azure SDK library to get the credential and token

[dbalseiro]

Changes

• Add Azure SDK for Go as a dependency
• Use Azure SDK for GO to get credentials and token to log in to [Azure Container Registry[(https://learn.microsoft.com/en-us/cli/azure/msal-based-azure-cli?view=azure-cli-latest)

/kind bug

Fixes #3288

Release Note

`func` no longer relies on Azure CLI’s deprecated `accessToken.json` file to authenticate with Azure Container Registry. Authentication now uses Azure’s supported credential mechanisms (e.g. Azure CLI, environment credentials, managed identity). No action is required for most users.

[knative-prow]

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[linux-foundation-easycla]

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• ✅ login: dbalseiro / name: Diego Balseiro (615673b, 9aa595b)

[knative-prow]

Welcome @dbalseiro! It looks like this is your first PR to knative/func 🎉

[knative-prow]

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