Closes gh-20046

Closes gh-20048

Closes gh-20045

Closes gh-20021

Closes gh-20034

Closes gh-20043

Closes gh-20042

Closes gh-20041

Closes gh-19868

Fixes gh-20003

See gh-20034

Closes gh-20033

Closes gh-20030

* pr/19981:
  Polish "Stop time web metrics when autotime is disabled"
  Stop time web metrics when autotime is disabled

Closes gh-19981

See gh-19981

See gh-19981

Closes gh-20029

Closes gh-20028

* pr/19901:
  Polish contribution
  Handle message of @ResponseStatus-annotated exception with WebFlux

Closes gh-19901

See gh-19901

See gh-19901

Fixes gh-19823

This partially re-applies the deprecation removal from commit
https://github.com/spring-projects/spring-boot/commit/df1837a16bc39a9314e34e5e89c76e1ddf56372c,
without removing CompositeHealthIndicator, HealthAggregator, and related
configuration that is required by Spring Cloud.

Closes gh-19909

This reverts commit df1837a16bc39a9314e34e5e89c76e1ddf56372c.

* pr/19978:
  Update copyright year of changed files
  Polish buildSrc

Closes gh-19978

See gh-19978

See gh-19978

* pr/20020:
  Update copyright year of changed files
  Polish

Closes gh-20020

See gh-20020

See gh-20020

* pr/20022:
  Upgrade to Ivy 2.5.0

Closes gh-20022

See gh-20022

* pr/19992:
  Fix link to Spring Integration Graph documentation

Closes gh-19992

See gh-19992

Closes gh-20023