Update Me Handler

curl --request PATCH \
  --url http://localhost:8000/v1/users \
  --header 'Content-Type: application/json' \
  --data '
{
  "default_tenant_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "first_name": "<string>",
  "last_name": "<string>"
}
'

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "email": "<string>",
  "first_name": "<string>",
  "last_name": "<string>",
  "idp_type": "PASSWORD",
  "current_tenant_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "current_tenant_role": "USER",
  "default_tenant_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}