Bump cockroachdb/cockroach from v25.3.3 to v25.3.4 in /tooling/docker

Bumps cockroachdb/cockroach from v25.3.3 to v25.3.4.

---
updated-dependencies:
- dependency-name: cockroachdb/cockroach
  dependency-version: v25.3.4
  dependency-type: direct:production
...

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Author: dependabot[bot]

tooling/docker/cockroachdb.Dockerfile

@@ -1,3 +1,3 @@
 # CockroachDB
 # See https://hub.docker.com/r/cockroachdb/cockroach
-FROM docker.io/cockroachdb/cockroach:v25.3.3
+FROM docker.io/cockroachdb/cockroach:v25.3.4