feature: log (core.error) when an upload error occurs

[Ma-ve]

Thanks so much for this action! I've got it running, and it's working great!

I ran into a 409 error just now though, when trying to upload my add-on, and it shouldn't be a version clash, as the latest uploaded in my case is 0.1.23, and I'm trying to publish 0.1.24.

Run yayuyokitano/[email protected]

/home/runner/work/_actions/yayuyokitano/firefox-addon/v0.0.6-alpha/webpack:/@yayuyokitano/firefox-addon/node_modules/axios/dist/node/axios.cjs:1900
    reject(new AxiosError(
^
AxiosError: Request failed with status code 409
    at settle (/home/runner/work/_actions/yayuyokitano/firefox-addon/v0.0.6-alpha/webpack:/@yayuyokitano/firefox-addon/node_modules/axios/dist/node/axios.cjs:1900:1)
    at IncomingMessage.handleStreamEnd (/home/runner/work/_actions/yayuyokitano/firefox-addon/v0.0.6-alpha/webpack:/@yayuyokitano/firefox-addon/node_modules/axios/dist/node/axios.cjs:2952:1)
    at IncomingMessage.emit (node:events:539:35)
    at endReadableNT (node:internal/streams/readable:1345:12)
    at processTicksAndRejections (node:internal/process/task_queues:83:21)

It's not giving my any info other than 'status code 409', and I would love to see the response body.