Releasetrain Endpoint returns 400 when team Query Parameter contains underscores

[shukatree]

Hello Kuberpult,

I'd like to report a small bug. Running a release train with the teams query parameter ?team=a_b(invoked via curl) resulted in a 400 being returned for a team that contained an underscore _ in its name. We encountered this issue for a Kuberpult instance running on version 1.15.0.

curl -sSf -X PUT $KUBERPULT_HOST/environments/$TARGET_ENV/releasetrain?team=john_doe -H "Authorization: Bearer $TOKEN"

Can you have a look?