fix(pom.xml): update sdk-core version to fix Gson 2.8.9 java.lang.NoSuchFieldError
fix(pom.xml): update sdk-core version to fix Gson 2.8.9 java.lang.NoSuchFieldError

watson-developer-cloud/java-sdk,watson-developer-cloud/java-sdk,watson-developer-cloud/java-sdk,watson-developer-cloud/java-sdk