Feature/sponsor patch

[YiFeiZhang2]

Description

Create route for sponsor update.

Type of change

• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

How Has This Been Tested?

Made new tests

• fail due to authentication
• fail due to authorization
• fail due to wrong sponsor id
• success to update sponsor

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[pierreTklein]

Looks good, just 2 changes for documentation