[BUG][JAVA] Client generation: required gson versions in generated pom.xml (2.10.1) and build.* are different

Description

The required versions of com.google.code.gson:gson differs in a couple of *.mustache files from the version 2.10.1 required in the pom.xml generation templates.

openapi-generator version 7.5.0-SNAPSHOT cloned 2024-04-02

Generation Details

in modules/openapi-generator/src/main/resources/Java/libraries/okhttp-gson/build.gradle.mustache
implementation 'com.google.code.gson:gson:2.9.1'
in modules/openapi-generator/src/main/resources/Java/libraries/rest-assured/build.sbt.mustache
"com.google.code.gson" % "gson" % "2.8.9",
in modules/openapi-generator/target/classes/Java/libraries/okhttp-gson/build.gradle.mustache
implementation 'com.google.code.gson:gson:2.9.1'
in modules/openapi-generator/target/classes/Java/libraries/okhttp-gson/build.sbt.mustache
"com.google.code.gson" % "gson" % "2.9.1",
in modules/openapi-generator/target/classes/Java/libraries/rest-assured/build.sbt.mustache
"com.google.code.gson" % "gson" % "2.8.9",
in modules/openapi-generator/target/classes/Java/JSON.mustache
* @see https://www.javadoc.io/doc/com.google.code.gson/gson/2.8.5/com/google/gson/stream/JsonReader.html

Most other generation template files mentioning com.google.code.gson:gson reference ${gson-version}, while some use '2.10.1' as a constant.

Steps to reproduce

Generate for Java client.

Suggest a fix

Use always ${gson-version} ?

Start by comparing the named Java mustache templates under modules/openapi-generator/src/main/resources/Java/libraries with the pom.xml generation templates, focusing on every com.google.code.gson:gson version. Generate a Java client to inspect the resulting build files. Done means the generated Gson dependency versions consistently follow the project's intended version or shared variable.