Update dependency isomorphic-fetch to v3

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This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
isomorphic-fetch (source)	^2.2.1 -> ^3.0.0

By merging this PR, the issue #20 will be automatically resolved and closed:

Severity	CVSS Score	CVE	Reachability
Medium	6.1	CVE-2022-0235
Medium	5.3	CVE-2020-15168

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Release Notes

matthew-andrews/isomorphic-fetch (isomorphic-fetch)

### [`v3.0.0`](https://togithub.com/matthew-andrews/isomorphic-fetch/compare/v2.2.1...v3.0.0) [Compare Source](https://togithub.com/matthew-andrews/isomorphic-fetch/compare/v2.2.1...v3.0.0)

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• [ ] If you want to rebase/retry this PR, check this box

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⚠ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

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• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
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The artifact failure details are included below:

File name: SingularityUI/package-lock.json