fix(http): do not recreate agent for each request#1550

Nico385412 wants to merge 3 commits intoAdyen:mainAdyen/adyen-node-api-library:mainfrom

Nico385412:fix/do-not-recreate-agent-on-each-requestNico385412/adyen-node-api-library:fix/do-not-recreate-agent-on-each-requestCopy head branch name to clipboard