Update plugin io.spring.dependency-management to v1.1.6

Author: renovate[bot]

build.gradle

@@ -39,7 +39,7 @@ plugins {
     id 'java'
     id 'java-library'
     id 'org.springframework.boot' version "${springBootVersion}" apply false
-    id 'io.spring.dependency-management' version '1.1.4'
+    id 'io.spring.dependency-management' version '1.1.6'
     id 'net.nemerosa.versioning' version "${versioningPluginVersion}"
     id 'com.google.protobuf' version "${protobufGradlePluginVersion}"
     id 'io.freefair.lombok' version "${lombokPluginVersion}" apply false