Lumosviridi v20 kubernetes updates (#6356)

Updates for v20+ and misc terraform bug fixes. Also refactored to use
terraform variables instead of locals which helps with readability and
ease of use for new users.

Terraform validation is currently passing:
![Screenshot 2024-07-21 at 13 18
37](https://github.com/user-attachments/assets/02aadc2d-d3f6-4e8b-9315-64e25191d9e6)

Additionally added [terraform-docs](https://terraform-docs.io/) to
generate a more helpful README for terraform specific configuration.

Raw K8s manifests were updated with changes for v20+ as well.

---------

Co-authored-by: Félix Malfait <felix.malfait@gmail.com>

packages/twenty-docker/k8s/terraform/.terraform-docs.yml

@@ -0,0 +1,48 @@
+formatter: "markdown table" # this is required
+
+version: ""
+
+header-from: main.tf
+
+recursive:
+  enabled: false
+  path: modules
+
+output:
+  file: "README.md"
+  mode: inject
+  template: |-
+    <!-- BEGIN_TF_DOCS -->
+    # TwentyCRM Terraform Docs
+
+    This file was generated by [terraform-docs](https://terraform-docs.io/), for more information on how to install, configure and use visit their website.
+
+    To update this `README.md` after changes to the Terraform code in this folder, run: `terraform-docs .`
+
+    To make configuration changes to how this doc is generated, see `./.terraform-docs.yml`
+    
+    {{ .Content }}
+    <!-- END_TF_DOCS -->
+
+output-values:
+  enabled: false
+  from: "outputs.tf"
+
+sort:
+  enabled: true
+  by: required
+
+settings:
+  anchor: true
+  color: true
+  default: true
+  description: true
+  escape: true
+  hide-empty: true
+  html: true
+  indent: 2
+  lockfile: true
+  read-comments: true
+  required: true
+  sensitive: true
+  type: true