(2.2.x): Bump org.springframework.boot from 3.2.7 to 3.2.8

Bumps [org.springframework.boot](https://github.com/spring-projects/spring-boot) from 3.2.7 to 3.2.8.
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.2.7...v3.2.8)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

settings.gradle

@@ -8,7 +8,7 @@ pluginManagement {
 	}
 	plugins {
 		id "io.spring.nohttp" version "0.0.11"
-		id 'org.springframework.boot' version "3.2.7"
+		id 'org.springframework.boot' version "3.2.8"
 		id 'org.asciidoctor.jvm.pdf'
 		id 'org.asciidoctor.jvm.convert'
 	}