fix(deps): update dependency org.springframework.boot:spring-boot-gra…

…dle-plugin to v3

gradle/libs.versions.toml

@@ -12,7 +12,7 @@ java-baseline = '11'
 micronaut = '3.10.3'
 slf4j = '1.7.36'
 spock = '2.3-groovy-3.0'
-spring-boot = '2.7.18'
+spring-boot = '3.2.4'
 
 [libraries]
 assetpipeline = { module = 'com.bertramlabs.plugins:asset-pipeline-grails', version.ref = 'assetpipeline' }