Bump io.spring.develocity.conventions from 0.0.20 to 0.0.21

Bumps [io.spring.develocity.conventions](https://github.com/spring-io/develocity-conventions) from 0.0.20 to 0.0.21.
- [Release notes](https://github.com/spring-io/develocity-conventions/releases)
- [Commits](https://github.com/spring-io/develocity-conventions/compare/v0.0.20...v0.0.21)

---
updated-dependencies:
- dependency-name: io.spring.develocity.conventions
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

settings.gradle

@@ -6,7 +6,7 @@ pluginManagement {
 
 plugins {
 	id "com.gradle.develocity" version "3.18"
-	id "io.spring.develocity.conventions" version "0.0.20"
+	id "io.spring.develocity.conventions" version "0.0.21"
 }
 
 dependencyResolutionManagement {