Update dependency io.pebbletemplates:pebble to v4

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
io.pebbletemplates:pebble (source)	3.2.4 -> 4.0.0

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Release Notes

PebbleTemplates/pebble (io.pebbletemplates:pebble)

v4.0.0

Compare Source

BREAKING CHANGES

• Add support for spring boot 4 (#​704)
• Use one of the following artifactId according to the spring boot version that you are using

ArtifactId	spring-boot version
pebble-legacy-spring-boot-starter	3.x.x
pebble-spring-boot-starter	4.x.x

• The following spring boot properties has been moved to .servlet or .reactive

Old property	New Property
pebble.allowRequestOverride	pebble.servlet.allowRequestOverride
pebble.allowSessionOverride	pebble.servlet.allowSessionOverride
pebble.cache	pebble.servlet.cache
pebble.contentType	pebble.servlet.contentType
pebble.exposeRequestAttributes	pebble.servlet.exposeRequestAttributes
pebble.exposeSessionAttributes	pebble.servlet.exposeSessionAttributes
pebble.exposeSpringMacroHelpers	pebble.servlet.exposeSpringMacroHelpers
	pebble.reactive.mediaTypes

For more information, please consult the spring-boot integration documentation in
the Boot externalized configuration section

New Features

• Add nl2br filter (#​699)

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