Adjust repositories in the build.gradle

Author: artembilan

build.gradle

@@ -1,6 +1,7 @@
 buildscript {
 	ext.kotlinVersion = '1.3.72'
 	repositories {
+		mavenCentral()
 		maven { url 'https://repo.spring.io/plugins-release' }
 	}
 	dependencies {
@@ -108,6 +109,7 @@ allprojects {
 	group = 'org.springframework.integration'
 
 	repositories {
+		mavenCentral()
 		maven { url 'https://repo.spring.io/libs-milestone' }
 		if (project.hasProperty('mavenLocal')) {
 			mavenLocal()