feat: upgrade all libraries

In this PR, I upgraded all libraries and made small changes to adapt the tests.

• I added before each verb rest the name of the libraries to use (as we use two libraries for the requests). This is due to the change in the RequestsLibrary which now offers rest verbs without necessarily using one session behind.
• The second modification concerns tests with the keyword Dictionary Should Contain Item. The RobotFramework library no longer converts values to strings before comparison when using its Collections library. Therefore, I had to create a dictionary to use the keyword.