fix(azure service): revert deps bump

[pront]

Summary

Quote from the issue:
"this introduced a regression transitively from Azure SDK version 0.20.0 that wasn't fixed until 0.22.0:

Issue: Azure/azure-sdk-for-rust#1739
PR: Azure/azure-sdk-for-rust#1997
Fixed in 0.22.0: https://github.com/Azure/azure-sdk-for-rust/commits/azure_identity%400.22.0/
It's worth noting, however, that 0.22.0 introduces its own regression - namely, the removal of EnvironmentCredential from DefaultAzureCredential."

Change Type

• Bug fix
• New feature
• Non-functional (chore, refactoring, docs)
• Performance

Is this a breaking change?

• Yes
• No

How did you test this PR?

Does this PR include user facing changes?

• Yes. Please add a changelog fragment based on our guidelines.
• No. A maintainer will apply the "no-changelog" label to this PR.

Notes

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References

• Closes: Azure SDK version bump introduced regression in token refresh #23036

Ref: #22917

[pront]

/ci-run-all

[datadog-vectordotdev]

Datadog Report

Branch report: pront/revert-azure-deps-bump
Commit report: d217720
Test service: vector

❌ 1 Failed (1 Known Flaky), 7 Passed, 0 Skipped, 25.52s Total Time

❌ Failed Tests (1)

• datadog::logs::validate - vector::e2e - ❄️ Known flaky - Details

  Expand for error

   Test failed, but output was not captured
  

[pront]

/ci-run-integration-azure

[pront]

• Azure IT suite was fixed.
• AMQP failure is new but unrelated to this PR.
• E2E failure is known

Had to merge manually since the two unrelated failures blocked this from going to the merge queue.