fix(core): fix iif return types

[rodrigo1991]

Pull Request Template

PR Checklist

• I have run npm test locally and all tests are passing.
• I have added/updated tests for any new behavior.
• I have added/updated documentation for any new behavior.
• If this is a significant change, an issue has already been created where the problem / solution was discussed: [N/A, or add link to issue here]

PR Description

This pull request fix the return types of iif

• no need to put a never third input type when we don't provide an else pipeline as the third parameter
  before:

iif<string, string, never>(
  (notEmptyString) => notEmptyString!==''
  () => 'the string is not empty'
)

now:

iif<string, string>(
  (notEmptyString) => notEmptyString!==''
  () => 'the string is not empty'
)

• when we use an else pipeline as the third parameter the returned type will never be mapped as the input first parameter on typescrit
  having the following:

iif<boolean, string, string>(
      (condition) => condition,
      () => 'if',
      () => 'else'
    ),
    (result) => {...}

before:

now:

[franher]

LGTM

[franher]

please, the package.json version is something managed by the CICD; revert this change.