API key creation: fix support of role with a space in the name

[paulnoirel]

Description

This PR fixes a bug missed during testing.
During the creation of API keys with the SDK, roles with a space in their name are not detected correctly.

Fixes PLT-2822

Type of change

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Document change (fix typo or modifying any markdown files, code comments or anything in the examples folder only)

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