fix test identifier backwards compatibility test

[alecps]

Description

Fixes identifier backwards compatibility test. Test had broken import statement and API compatibilities. Because all versions of the @celo/identity sdk prior to 5.1.0 are deprecated, and because we know that identifiers had continuity between this version and all previous versions, this PR bumps the "old" sdk version up to 5.1.0

Other changes

NA

Tested

Yes

Related issues

NA

Backwards compatibility

Yes

Documentation

NA

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: be7cec35f52b03d447ad497947ac58e3f55b0000

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 0 packages

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[socket-security[bot]]

Updated and removed dependencies detected. Learn more about Socket for GitHub ↗︎

Packages	Version	New capabilities	Transitives	Size	Publisher
@celo/identity	1.5.2...5.1.0	None	+1/-89	341 kB	app-tooling

🚮 Removed packages: @celo/base@5.0.0, @celo/contractkit@1.5.2, @celo/utils@1.5.2, @celo/wallet-local@1.5.2