Update version of the XSD: suggestion of a new branch

[EliotTerrier]

In the Greenlight GitHub repository https://github.com/ITxPT/DATA4PTTools/tree/develop/xsd/epip there are two versions of the xsd, 1.1.1 and 1.1.2. Where 1.1.1 is the current version of the XSD in this repository.

Suggestion:

• What do you think about creating a second branch with the new 1.1.2 version of the xsd?

[TuThoThai]

I agree with the suggestion.
If you are fine with it, @Aurige, @EliotTerrier could create the PR.