See gh-17129

See gh-17129

Fix polish commit from 919913ae to correctly name the property
getter/setters.

See gh-17022

See gh-17096

* pr/17022:
  Polish "Add session property for ConfigureRedisAction"
  Add session property for ConfigureRedisAction

Closes gh-17022

See gh-17022

Add a new property to `RedisSessionProperties` that allows the default
`ConfigureRedisAction` to be changed. Users can still also configure
the action using a `@Bean`.

See gh-17022

* pr/17091:
  Polish "Support default headers with RestTemplateBuilder"
  Support default headers with RestTemplateBuilder

Closes gh-17091

Broaden the scope of customizer support so that instead of focusing
just on headers, we can now customize any outgoing `HttpClientRequest`.
Also update auto-configuration to automatically add any
`RestTemplateRequestCustomizer` beans to the builder.

See gh-17091

Update `RestTemplateBuilder` so that it is easier to apply custom
headers to the outgoing request. The update is particularly useful
for setting the `User-Agent` header, for example so that a GitHub
username can be used when calling `api.github.com`.

See gh-17091

Closes gh-17086

This commit changes the default file extension for Freemarker templates
from `*.ftl` to `*.ftlh`. This commit also enables by default the
Freemarker setting `"recognize_standard_file_extensions"` to ensure that
HTML escaping is performed by default in Spring Boot applications.

Applications should adapt to this change by changing the file extensions
of existing templates to `.ftlh`.

Closes gh-15131

Closes gh-17127

Closes gh-17124

Fixes gh-17123

Closes gh-17122

Fixes gh-17121

Closes gh-17120

Closes gh-17119

Closes gh-17118

Fixes gh-17115

Closes gh-17114

Fixes gh-17095

Closes gh-17112

* gh-17111:
  Make dependency available for javadoc generation

Closes gh-17111

See gh-17111

Closes gh-17109

* pr/17069:
  Add missing @Test annotations

Closes gh-17069

This commit also restores assertion accidentally removed in
commit 44d83215.

See gh-17069

* pr/17106:
  Fix deployment tests JUnit 5 checkstyle issues

Closes gh-17106

See gh-17106

Closes gh-17104

Closes gh-17099

Add a rule to enforce JUnit 5 usage and conventions.

Closes gh-17093

Closes gh-15872

Update `ConfigFileApplicationListener` so that property filtering works
against the original `PropertySource`, rather than the underling `Map`.

Prior to this commit, it was impossible for a `CompositePropertySource`
to be used as the `defaultPropertySource`.

Closes gh-17011