Submission : Java17 template

[Fabrizzz]

Hello,
I am currently working on a personal project using OpenFaas with Java function and since Java 17 is now the latest LTS version, i tried to make minimal changes to the original Java template to upgrade it from JDK 11 to JDK 17.
Since OpenJdk images are now deprecated on Docker Hub, i upgraded the image to open source Eclipse Temurin 17 (based on Alpine instead of Debian), and also updated the version of Gradle to 8.0 (the latest). I also had to make a few changes to function/build.gradle since a few of the commands were deprecated and have been upgraded.
I also tested it locally and it seems to work fine, so I thought to post it here in case it could be useful to anybody using Java.
Here is the link to my repository