Bump the development-dependencies group with 2 updates (#3451)

Bumps the development-dependencies group with 2 updates: [io.spring.develocity.conventions](https://github.com/spring-io/develocity-conventions) and [org.springframework.boot:spring-boot-starter](https://github.com/spring-projects/spring-boot).


Updates `io.spring.develocity.conventions` from 0.0.19 to 0.0.20
- [Release notes](https://github.com/spring-io/develocity-conventions/releases)
- [Commits](spring-io/develocity-conventions@v0.0.19...v0.0.20)

Updates `org.springframework.boot:spring-boot-starter` from 3.2.8 to 3.2.9
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.2.8...v3.2.9)

---
updated-dependencies:
- dependency-name: io.spring.develocity.conventions
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: development-dependencies
- dependency-name: org.springframework.boot:spring-boot-starter
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: development-dependencies
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

build.gradle

@@ -67,7 +67,7 @@ ext {
 	mockitoVersion = '5.10.0'
 	reactorVersion = '2023.0.9'
 	scalaVersion = '2.13'
-	springBootVersion = '3.2.8' // docs module
+	springBootVersion = '3.2.9' // docs module
 	springDataVersion = '2024.0.3'
 	springRetryVersion = '2.0.8'
 	springVersion = '6.1.12'

settings.gradle

@@ -7,7 +7,7 @@ pluginManagement {
 
 plugins {
 	id 'com.gradle.develocity' version '3.17.6'
-	id 'io.spring.develocity.conventions' version '0.0.19'
+	id 'io.spring.develocity.conventions' version '0.0.20'
 }
 
 rootProject.name = 'spring-kafka-dist'