Update eslint-plugin-jest to 27.6.0

[KamilaBorowska]

This allows using @typescript-eslint/eslint-plugin 6 without warnings, while eslint-plugin-jest 25 only supported 5.

The breaking changes in 26 according to changelog:

• Drop support for @typescript-eslint/eslint-plugin@4

The breaking changes in 27 according to changelog:

• no-alias-methods is now recommended as the methods themselves will be removed in the next major version of Jest
• no-jest-import: removed no-jest-import rule
• unbound-method: errors thrown by the unbound-method base rule are no longer suppressed - really this means that if you don't specify project when this rule is enabled and @typescript-eslint/eslint-plugin is present, that error will no longer be suppressed instead of silently doing nothing; it will still not throw if this rule is enabled without the base rule being present
• no-restricted-matchers: no-restricted-matchers now checks against the start of the expect chain, meaning you have to explicitly list each possible matcher & modifier permutations that you want to restrict
• Support for ESLint version 6 is removed
• Node versions 12 and 17 are no longer supported