Update samples to use new API endpoints

[hendrikebbers]

🆕🐥 First Timers Only

This issue is reserved for people who have never contributed to this project or any open source software (OSS) in general.
We know that creating a pull request (PR) is a major barrier for new contributors.
This issue is reserved for people who have never contributed to this project or any open source software (OSS) in general.
We know that creating a pull request (PR) is a major barrier for new contributors.
The goal of this issue and all other issues labeled by 'good first issue' is to help you make your first contribution.

👾 Description of the issue

The project contains the 2 HTML pages index.html and contributors.html that make use of the API that is provided by ApiEndpoint.java. Today the samples use an API that is defined as deprecated and will be removed in future. We need to update the samples to use the new API (v2).

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[tomasz-sieminski]

Hi. I would like to work on this issue :)

[Daksh-134]

Hi @hendrikebbers ,pls assign this issue to me if it is not completed

[Vinay00018]

hey I'm interested

[noelportillo]

Ok

[HEYDEV001]

I would like to contribute as i'm currently learning SpringBoot. So i think i can help writing good piece of code