chore(deps): update docker.io/library/postgres:12 docker digest to b6a8929

Author: renovate[bot]

terraform-hpvs/postgresql-cluster/compose_master/docker-compose.yml

@@ -1,6 +1,6 @@
 services:
   postgresql:
-    image: docker.io/library/postgres:12@sha256:d5433064852277f3187a591e02780d377c253f69bfbe3ca66c4cf3d58be83996
+    image: docker.io/library/postgres:12@sha256:b6a892995f8b7c9fc30b19fe5578b303c5f22659cb7d14217e114c250b78c075
     ports:
       - "5432:5432"
     restart: always

terraform-hpvs/postgresql/compose/docker-compose.yml

@@ -1,6 +1,6 @@
 services:
   postgresql:
-    image: docker.io/library/postgres:12@sha256:429c57f9ae8f379601df6df7448b0c2c8df4da23d7ba2cb57fee8da8f262eda0
+    image: docker.io/library/postgres:12@sha256:b6a892995f8b7c9fc30b19fe5578b303c5f22659cb7d14217e114c250b78c075
     ports:
       - "5432:5432"
     environment: