Merge #151621

151621: master: Update pkg/testutils/release/cockroach_releases.yaml r=rail a=cockroach-teamcity

Update pkg/testutils/release/cockroach_releases.yaml with recent values.

Epic: None
Release note: None
Release justification: test-only updates

Co-authored-by: CRL Release bot <[email protected]>

Author: craig[bot]

pkg/testutils/release/cockroach_releases.yaml

@@ -30,7 +30,7 @@
   - 24.2.1
   predecessor: "24.1"
 "24.3":
-  latest: 24.3.17
+  latest: 24.3.18
   predecessor: "24.2"
 "25.1":
   latest: 25.1.10