Rework Utils.unzip method

[rolnico]

Please check if the PR fulfills these requirements

• The commit message follows our guidelines
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

Does this PR already have an issue describing the problem?
No

What kind of change does this PR introduce?
Feature / Quality

Does this PR introduce a new Powsybl Action implying to be implemented in simulators or pypowsybl?

• Yes, the corresponding issue is here
• No

What is the current behavior?
The method raises the issue:

Make sure that expanding this archive file is safe here.
Expanding archive files without controlling resource consumption is security-sensitive java:S5042

What is the new behavior (if this is a feature change)?
The issue is still there but the method is more secure according to Sonar, and therefore would be considered a false positive

Does this PR introduce a breaking change or deprecate an API?

• Yes
• No

If yes, please check if the following requirements are fulfilled

• The Breaking Change or Deprecated label has been added
• The migration steps are described in the following section

What changes might users need to make in their application due to this PR? (migration steps)

Other information: