Bump org.springframework.boot from 2.6.1 to 3.2.1

Bumps [org.springframework.boot](https://github.com/spring-projects/spring-boot) from 2.6.1 to 3.2.1.
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v2.6.1...v3.2.1)

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

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

tools/asu/build.gradle

@@ -1,5 +1,5 @@
 plugins {
-    id 'org.springframework.boot' version '2.6.1'
+    id 'org.springframework.boot' version '3.2.1'
     id 'java'
     id 'application'
 }