See gh-12707

* pr/13345:
  Remove usage of deprecated Matchers class

Closes gh-13345

* pr/13343:
  Polish stream creation in some PropertySources

Closes gh-13343

Fixes gh-13303

Closes gh-13323

Closes gh-13330

Closes gh-13319

* pr/13322:
  Upgrade to Hazelcast 3.10.1

Closes gh-13322

* pr/13324:
  Make MetricsProperties fields final if possible

Closes gh-13324

See gh-13320

* pr/13320:
  Polish

Closes gh-13320

Fixes gh-13122

Closes gh-13318

This commit separates the auto-configuration of JavaMailSender in two
distinct configuration: one based on existing Session available on JNDI
and the other one based on properties configuration.

This clarifies the auto-configuration report and the fact that the JNDI
variant overrides any Session-related properties that would have been
set in the environment

Closes gh-13026

Closes gh-13314

* pr/13308:
  Remove outdated reference to @EnableReactor

Closes gh-13308