Migrate to io.spring.develocity.conventions plugin

* Remove `com.gradle.develocity` plugin management since it comes now ]
as transitive from the `io.spring.develocity.conventions`

settings.gradle

@@ -1,12 +1,17 @@
+pluginManagement {
+    repositories {
+        gradlePluginPortal()
+        mavenCentral()
+    }
+}
+
 plugins {
-    id 'com.gradle.develocity' version '3.17.6' apply false
-    id 'io.spring.ge.conventions' version '0.0.17' apply false
+    id 'io.spring.develocity.conventions' version '0.0.21' apply false
 }
 
 startParameter.noBuildScan = startParameter.taskNames.contains('format')
 
-apply plugin: 'com.gradle.develocity'
-apply plugin: 'io.spring.ge.conventions'
+apply plugin: 'io.spring.develocity.conventions'
 
 rootProject.name = 'spring-functions-catalog'