Fix accept param validation

[gaetano-miglionico]

List of Changes

• Fix error 406 when Accept: application/problem+json

Motivation and Context

Try to fix error 406 when onboarding is calling institution api that returns no content on success

How Has This Been Tested?

• Local tests
• Unit tests
• Integration tests

Types of changes

• 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)

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud