release-22.2: go.mod: use the crdb fork for etcd

[pav-kv]

In order to cherry-pick bug fixes from upstream etcd-io/raft, use our fork. The fixes will be manually added because the etcd/raft has migrated to its own repo at etcd-io/raft.

Release justification: necessary to cherry-pick a bug fix from upstream
Epic: None
Release note: None

[blathers-crl]

Thanks for opening a backport.

Please check the backport criteria before merging:

• Patches should only be created for serious issues or test-only changes.
• Patches should not break backwards-compatibility.
• Patches should change as little code as possible.
• Patches should not change on-disk formats or node communication protocols.
• Patches should not add new functionality.
• Patches must not add, edit, or otherwise modify cluster versions; or add version gates.

If some of the basic criteria cannot be satisfied, ensure that the exceptional criteria are satisfied within.

• There is a high priority need for the functionality that cannot wait until the next release and is difficult to address in another way.
• The new functionality is additive-only and only runs for clusters which have specifically “opted in” to it (e.g. by a cluster setting).
• New code is protected by a conditional check that is trivial to verify and ensures that it only runs for opt-in clusters.
• The PM and TL on the team that owns the changed code have signed off that the change obeys the above rules.

Add a brief release justification to the body of your PR to justify this backport.

Some other things to consider:

• What did we do to ensure that a user that doesn’t know & care about this backport, has no idea that it happened?
• Will this work in a cluster of mixed patch versions? Did we test that?
• If a user upgrades a patch version, uses this feature, and then downgrades, what happens?

[cockroach-teamcity]

This change is 

[pav-kv]

Lint is broken. I couldn't get go mod tidy and go mod vendor to succeed:

...
github.com/cockroachdb/cockroach/pkg/kv/kvnemesis imports
        github.com/cockroachdb/cockroach/pkg/kv/kvnemesis/kvnemesisutil: no matching versions for query "latest"
github.com/cockroachdb/cockroach/pkg/sql/plpgsql/parser imports
        github.com/cockroachdb/cockroach/pkg/sql/sem/plpgsqltree: no matching versions for query "latest"
github.com/cockroachdb/cockroach/pkg/ccl/kvccl/kvtenantccl/upgradeinterlockccl tested by
        github.com/cockroachdb/cockroach/pkg/ccl/kvccl/kvtenantccl/upgradeinterlockccl.test imports
        github.com/cockroachdb/cockroach/pkg/ccl/kvccl/kvtenantccl/upgradeinterlockccl/sharedtestutil: no matching versions for query "latest"

Same behaviour prior to this PR, if I'm just on the release-22.2 branch.

[tbg]

Not sure about the go mod issues. Maybe dev-inf can help us?

[pav-kv]

@tbg @erikgrinaker Could you take another look? I updated deps in vendor. For now this should point at our fork at the same hash.

[erikgrinaker]

LGTM

[craig]

Build succeeded:

• Bazel Essential CI (Cockroach)