[release/2.3] Update blob upload to use managed identity

[Abe27342]

Description

Updates the blob upload steps to use the pipeline's identity as authentication rather than a storage key.

Cherry-pick of #22647

[github-actions[bot]]

[!WARNING] WARNING: This PR is targeting a release branch!

All changes must first be merged into main and then backported to the target release branch. Please include a link to the main PR in the description of this PR.

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[msfluid-bot]

Could not find a usable baseline build with search starting at CI c1311b2b3e308f1378dda22bff692cab921a858d

Generated by :no_entry_sign: dangerJS against 6f3c1e9dc44676fba540a476b34a87e62a396f23

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This PR has been automatically marked as stale because it has had no activity for 60 days. It will be closed if no further activity occurs within 8 days of this comment. Thank you for your contributions to Fluid Framework!