See gh-14227

Closes gh-14258

This commit harmonizes the auto-configurations for RestTemplate and
WebClient in a single `HttpClientMetricsAutoConfiguration`. Doing so
allows to give a better scope for the shared `MeterFilter`.

As a result`WebClientMetricsAutoConfiguration` has moved to the `client`
package.

Closes gh-14269

Closes gh-14069

Closes gh-14264

See gh-14227

Security config classes are not included when the
secure flag is set to false.

Closes gh-6514

Closes gh-14227

* pr/14173:
  Polish "Limit metrics collection of incoming requests"
  Limit metrics collection of incoming requests

Closes gh-14173

See gh-14173

* pr/14224:
  Upgrade to SnakeYAML 1.23

Closes gh-14224

See gh-14221

This commit removes an undocumented property and rename the Spring
Cloud Service Connectors auto-configuration.

Closes gh-14219

This property is deprecated in favor of
`spring.security.oauth2.client.registration.login.*.redirect-uri

Closes gh-14226

See gh-13812

This commit also refactors OAuth2 client properties. With
the added support for authorization_code clients, client
registrations are now divided into `login` and `authorization_code`.
An environment post processor is used for backward compatibility with
old Open ID Connect login clients.

Closes gh-13812

* pr/14221:
  Polish some joining collectors

Closes gh-14221

* pr/14215:
  Polish "Improve Kafka Auto-configuration"
  Improve Kafka Auto-configuration

Closes gh-14215

- transaction manager
- error handler
- after rollback processor

See gh-14215

* pr/14176:
  Polish "Add support for com.mongodb.client.MongoClient"
  Add support for com.mongodb.client.MongoClient