* When failing to retrieve the payload, accounts for the possibility of
postgres being disabled for payload storage.
* Makes the lack of distinction between expected failure and critical
failure more explicit.
* Makes failure to retrieve things from storage internal server errors.
* So many branches, add comment for retry success.
* Typo memcached.

Logging too many huge responses.

Store metadata for payload requests. Used for debugging and to analyze
opportunity for improvement.

Only stores the metadata in memory. Endpoint is intended to be kept
private. Another service needs to come collect.

Proposers ask relays for block submissions even if the relay never
offered the block. If the relay also never felt the block submission was
the best bid, the relay won't have it. Because non-top block submissions
still get archived in many cases, we have an block submission service
which takes the ones which are safe to propose and makes them available
in Redis. This commit enables the proposer API to read those block
submissions.

Bumps [github.com/ethereum/go-ethereum](https://github.com/ethereum/go-ethereum) from 1.12.2 to 1.13.5.
- [Release notes](https://github.com/ethereum/go-ethereum/releases)
- [Commits](ethereum/go-ethereum@v1.12.2...v1.13.5)

---
updated-dependencies:
- dependency-name: github.com/ethereum/go-ethereum
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>