Update postgres

Changes:

- https://github.com/docker-library/postgres/commit/889f944: Update 18 to 18beta2, bookworm 18~beta2-1.pgdg120+1, bullseye 18~beta2-1.pgdg110+1

library/postgres

@@ -4,24 +4,24 @@ Maintainers: Tianon Gravi <[email protected]> (@tianon),
              Joseph Ferguson <[email protected]> (@yosifkit)
 GitRepo: https://github.com/docker-library/postgres.git
 
-Tags: 18beta1, 18beta1-bookworm
+Tags: 18beta2, 18beta2-bookworm
 Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, mips64le, ppc64le, s390x
-GitCommit: 46e8474a6e8ac8460416ac62afcbdf59cfeb6366
+GitCommit: 889f9447cd2dfe21cccfbe9bb7945e3b037e02d8
 Directory: 18/bookworm
 
-Tags: 18beta1-bullseye
+Tags: 18beta2-bullseye
 Architectures: amd64, arm32v7, arm64v8, i386
-GitCommit: 46e8474a6e8ac8460416ac62afcbdf59cfeb6366
+GitCommit: 889f9447cd2dfe21cccfbe9bb7945e3b037e02d8
 Directory: 18/bullseye
 
-Tags: 18beta1-alpine3.22, 18beta1-alpine
+Tags: 18beta2-alpine3.22, 18beta2-alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, riscv64, s390x
-GitCommit: 2c6fe8daca9d2ccc143afe6b1cdbc1eb80379d3f
+GitCommit: 889f9447cd2dfe21cccfbe9bb7945e3b037e02d8
 Directory: 18/alpine3.22
 
-Tags: 18beta1-alpine3.21
+Tags: 18beta2-alpine3.21
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, riscv64, s390x
-GitCommit: 2c6fe8daca9d2ccc143afe6b1cdbc1eb80379d3f
+GitCommit: 889f9447cd2dfe21cccfbe9bb7945e3b037e02d8
 Directory: 18/alpine3.21
 
 Tags: 17.5, 17, latest, 17.5-bookworm, 17-bookworm, bookworm