Use Spring plugin to manage versions

Author: james

service/build.gradle

@@ -1,5 +1,5 @@
 plugins {
-    id "org.springframework.boot" version "2.2.4.RELEASE"
+    id "org.springframework.boot" version "2.2.7.RELEASE"
     id "io.spring.dependency-management" version "1.0.9.RELEASE"
     id "com.palantir.docker" version "0.24.0"
     id "com.gorylenko.gradle-git-properties" version "2.2.0"
@@ -39,7 +39,7 @@ dependencies {
     implementation project(':client')
     implementation group: 'org.springframework.boot', name: 'spring-boot-starter-web'
     implementation group: 'org.springframework.boot', name: 'spring-boot-starter-actuator'
-    implementation group: 'org.springframework.cloud', name: 'spring-cloud-starter-sleuth', version: '2.2.1.RELEASE'
-    implementation group: 'io.micrometer', name: 'micrometer-registry-new-relic', version: '1.3.3'
+    implementation group: 'org.springframework.cloud', name: 'spring-cloud-starter-sleuth'
+    implementation group: 'io.micrometer', name: 'micrometer-registry-new-relic'
     testImplementation group: 'org.springframework.boot', name: 'spring-boot-starter-test'
 }