context timeout may be a bit on the aggressive side

[lukehinds]

I don't have the fasted connection in the world, and this means I can't manage to submit an entry before a timeout.

Your browser will now be opened to:
https://oauth2.sigstore.dev/auth/auth?access_type=online&client_id=sigstore&code_challenge=4CJFV4OeTnB2TpNJ7wmfZi7reFtk6uUPkcocclQDe9Y&code_challenge_method=S256&nonce=1vtRDgvw6lsbIm2T1C8ECHppols&redirect_uri=http%3A%2F%2Flocalhost%3A5556%2Fauth%2Fcallback&response_type=code&scope=openid+email&state=1vtRDhj9a9rIDKVWtdYYhOmWVA3

Received OpenID Scope retrieved for account: lhinds@redhat.com
Received signing certificate with serial number:  4235082753572503082826954077441501986908503919
Sending entry to transparency log
Error: Post "https://rekor.sigstore.dev/api/v1/log/entries": context deadline exceeded

This is on a 19mb file

[bobcallaway]

Fixed in #390