feat: Add postgres server to Azure deployment

[vdmgolub]

No description provided.

[github-actions]

💰 Infracost estimate: monthly cost will increase by $728 (+30%) 📈

Project	Previous	New	Diff
infra_azure	$734	$1,463	+$728 (+99%)
All projects	$2,446	$3,175	+$728 (+30%)

2 projects have no cost estimate changes.

Infracost output

──────────────────────────────────
Project: infra_azure
Module path: azure

+ azurerm_postgresql_flexible_server.gp
  +$728

    + Compute (GP_Standard_D4s_v3)
      +$250

    + Storage
      +$3.68

    + Additional backup storage
      +$475

Monthly cost change for infra_azure (Module path: azure)
Amount:  +$728 ($734 → $1,463)
Percent: +99%

──────────────────────────────────

The following projects have no cost estimate changes: infra_aws, infra_google (Module path: google)
Run the following command to see their breakdown: infracost breakdown --path=/path/to/code

──────────────────────────────────
Key: ~ changed, + added, - removed

7 cloud resources were detected:
∙ 7 were estimated, all of which include usage-based costs, see https://infracost.io/usage-file

This comment will be updated when the cost estimate changes.

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