[ansible] JFrog Platform 7.18.5 release (#106)

* [ansible] JFrog Platform 7.18.5 release

Ansible/ansible_collections/jfrog/platform/roles/postgres/README.md

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+# postgres
+The postgres role will install Postgresql software and configure a database and user to support an Artifactory or Xray server.
+
+### Role Variables
+
+By default, the [_pg_hba.conf_](https://www.postgresql.org/docs/13/auth-pg-hba-conf.html) client authentication file is configured for open access for development purposes through the _postgres_allowed_hosts_ variable:
+
+```
+postgres_allowed_hosts:
+  - { type: "host", database: "all", user: "all", address: "0.0.0.0/0", method: "trust"}
+```
+
+**THIS SHOULD NOT BE USED FOR PRODUCTION.**
+
+**Update this variable to only allow access from Artifactory, Distibution, MissionControl and Xray.**
+
+## Example Playbook
+```
+---
+- hosts: postgres_servers
+  roles:
+    - postgres
+```