Content-Type header for the token request (#126)#127

Anton Bazhanov (toshka) wants to merge 1 commit intoairbytehq:mainairbytehq/airbyte-api-python-sdk:mainfrom

toshka:bugfix/client_credentials_authtoshka/airbyte-api-python-sdk:bugfix/client_credentials_authCopy head branch name to clipboard