[Snyk] Security upgrade jest from 25.5.4 to 26.0.0

[snyk-bot]

Snyk has created this PR to fix one or more vulnerable packages in the `npm` dependencies of this project.

Changes included in this PR

• Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
  • tests/package.json
  • tests/package-lock.json

Vulnerabilities that will be fixed

With an upgrade:

Severity	Priority Score (*)	Issue	Breaking Change	Exploit Maturity
	758/1000 Why? Proof of Concept exploit, Recently disclosed, Has a fix available, CVSS 7.3	Prototype Pollution SNYK-JS-Y18N-1021887	Yes	Proof of Concept

(*) Note that the real score may have changed since the PR was raised.

Commit messages

Package name: jest

The new version differs by 49 commits.

• 343532a v26.0.0
• 075854a chore: update changelog for release
• 68b65af v26.0.0-alpha.2
• d30a586 fix: disallow hook definitions in tests (#9957)
• 3375ac3 chore: remove unused prettier uninstall step from CI
• 0a63d40 fix: absolute path moduleNameMapper + jest.mock issue (#8727)
• 03dbb2f chore: fix watch mode test with utimes (#9967)
• 68d12d5 chore: skip broken test on windows (#9966)
• e8e8146 align circus with jasmine's top-to-bottom execution order (#9965)
• 968a301 Fix invalid re-run of tests in watch mode (#7347)
• 5d1be03 chore: fix windows CI (#9964)
• 2bac04f v26.0.0-alpha.1
• c665f22 feat: add `createMockFromModule` to replace `genMockFromModule` (#9962)
• 8147af1 chore: improve error on module not found (#9963)
• 71631f6 feat: add new 'modern' implementation of Fake Timers (#7776)
• d7f3427 chore: rename LolexFakeTimers to ModernFakeTimers (#9960)
• 2c7682c Update index.js (#9095)
• 5a16415 docs: Updated Testing Frameworks guide with React; make it generic (#9106)
• 4216b86 updated docs regarding testSequencer (#9174)
• 2e8f8d5 fix: handle `null` being passed to `createTransformer` (#9955)
• 7a3c997 jest-circus: throw if a test / hook is defined asynchronously (#8096)
• 42f920c chore: update ts-eslint (#9953)
• 3078172 Updated config docs with default transform value (#8583)
• b6052e0 Update jest-phabricator documentation (#8662)

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