This commit polishes the previous one and aligns the Jest
HealthIndicator with the changes made for the REST variant.

Closes gh-15366

This commit adds more information to the ElasticSearch REST
health indicator.

When the ES instance responds with an error HTTP status,
the health details now include the actual status code and reason phrase.
When the ES instance returns a HTTP 200 response, the entire response
map is used as health details.

See gh-15366

See gh-15435

* pr/15422:
  Remove Mockito 1 leftover

Closes gh-15422

See gh-15164

An issue is created if a new release is detected.

Closes gh-15164

Fixes gh-15324

See gh-15435

See gh-15435

Closes gh-15436

Closes gh-15423

Closes gh-15435

Closes gh-15432

* pr/15427:
  Simplify code by using try-with-resources statement

Closes gh-15427

* pr/15424:
  Polish "Replace explicit generic type with diamond operator"
  Replace explicit generic type with diamond operator

Closes gh-15424

See gh-15424

See gh-15372

Fixes gh-15372

Fixes gh-15354