jackson-version never updated in handlebars swagger-codegen-cli

Description

Downloaded Jar
https://repo1.maven.org/maven2/io/swagger/codegen/v3/swagger-codegen-cli/3.0.25/swagger-codegen-cli-3.0.25.jar

There are two resttemplate\pom.mustache files in the Jar.

• swagger-codegen-cli.jar\handlebars\Java\libraries\resttemplate\pom.mustache
• swagger-codegen-cli.jar\Java\libraries\resttemplate\pom.mustache

The pom.mustache inside handlebars seems to be never updated.

Swagger-codegen version

swagger-codegen-cli-3.0.25.jar

Command line used for generation

java -jar swagger-codegen-cli.jar generate --input-spec swagger.yaml ^
-D hideGenerationTimestamp=true,java8=true,dateLibrary=java8 ^
--lang java --library resttemplate --template-engine handlebars ^
--api-package com.de.api --model-package com.de.model --invoker-package com.de.invoker ^
--group-id com.de --artifact-id swagger-codegen-apiclient --artifact-version 1.0.0 ^
--output swagger-codegen-apiclient

Compare the two Java resttemplate/pom.mustache files at the paths linked in the issue, focusing on the jackson-version entries. Start by reading the handlebars template in swagger-codegen-generators and the corresponding Java template in swagger-codegen, then verify that the generated CLI includes the intended updated value for both template engines.