go.mod: update github.com/prometheus/client_golang to v1.15.0

[hazzik]

Updated update github.com/prometheus/client_golang to v1.15.0 to minimal version that does not have a myriads of unnecessary dependencies.

This commit is just a result of:

go get github.com/prometheus/[email protected]
go mod tidy

[cockroach-teamcity]

This change is 

[RaduBerinde]

This is an indirect dependency and I'm hesitant to downgrade it. Also, what Pebble version do you use? You'd need this on a pebble-release- branch.

[hazzik]

Thanks for feedback.

This is an indirect dependency

It is pretty much direct, updating github.com/prometheus/client_golang to 0.15.0 would produce almost the same diff, because prometheus/client_golang and prometheus/common have circular dependency on each other.

I could redo with the upgrade of client_golang to 0.15.0 as I did initially, that would be a direct dependency upgrade. Would it be acceptable?

Also, what Pebble version do you use?

v1.1.2 -- the version used by go-ethereum. We have dependency on it, and I'm trying to cleanup things from bottom up.

You'd need this on a pebble-release- branch.

Thanks for suggestion, I'll re-target to that branch.

[RaduBerinde]

I could redo with the upgrade of client_golang to 0.15.0 as I did initially, that would be a direct dependency upgrade. Would it be acceptable?

Oh, I see. Yes, updating that is good. I can do that on the other branches separately, you'll care about the pebble-release-1.1 branch.

[RaduBerinde]

Looks like CI isn't set up properly on this branch. I pushed a commit that should fix it, could you rebase? Thanks!

[hazzik]

Done

[RaduBerinde]

I verified that the diff is exactly what I get when I do go get github.com/prometheus/[email protected]; go mod tidy.

[RaduBerinde]

I tagged a v1.1.5 you can upgrade to. https://github.com/cockroachdb/pebble/releases/tag/v1.1.5