Allow setting http_proxy variables

Hi!

I'm using onpremises GitHub Enterprise Server with no direct connection to the internet, only through http proxy.

I've tried setting the env var "HTTP_PROXY" and "HTTPS_PROXY" in your action but with or without it I receive the following error:

Run toko-bifrost/ms-teams-deploy-card@master Workflow run information: { "owner": "BdP", "repo": "ml-cpi", "ref": "074c4c578f04a733227d30a2e0053dd34d0c2a1d", "branchUrl": "https://github.com/BdP/ml-cpi/tree/refs/heads/DEV", "runId": "398", "runNum": "28" } (node:1635192) UnhandledPromiseRejectionWarning: HttpError: request to https://api.github.com/repos/mc/ml-cpi/commits/074c4c578f04a733227d30a2e0053dd34d0c2a1d failed, reason: getaddrinfo ENOTFOUND api.github.com at /opt/actions-runner/_work/_actions/toko-bifrost/ms-teams-deploy-card/master/dist/main/index.js:1:463063 at processTicksAndRejections (internal/process/task_queues.js:93:5) at async getOctokitCommit (/opt/actions-runner/_work/_actions/toko-bifrost/ms-teams-deploy-card/master/dist/main/index.js:1:36969) at async Object.formatAndNotify (/opt/actions-runner/_work/_actions/toko-bifrost/ms-teams-deploy-card/master/dist/main/index.js:1:37465) (node:1635192) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1) (node:1635192) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code

Would it be possible to take the env var into consideration? Or have an optional argument in your action?

Thanks :)

toko-bifrost / ms-teams-deploy-card

Allow setting http_proxy variables #39