(3.4.x): Bump org.springframework.boot from 3.4.5 to 3.4.6

Bumps [org.springframework.boot](https://github.com/spring-projects/spring-boot) from 3.4.5 to 3.4.6.
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](https://github.com/spring-projects/spring-boot/compare/v3.4.5...v3.4.6)

---
updated-dependencies:
- dependency-name: org.springframework.boot
  dependency-version: 3.4.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

settings.gradle

@@ -19,7 +19,7 @@ pluginManagement {
 		id 'io.spring.nohttp' version '0.0.11'
 		id 'io.spring.javaformat' version '0.0.45'
 		id 'org.asciidoctor.jvm.convert' version '3.3.2'
-		id 'org.springframework.boot' version '3.4.5'
+		id 'org.springframework.boot' version '3.4.6'
 	}
 	repositories {
 		gradlePluginPortal()