Add deprecation message for postgresql resources and data sources (#247)

* Update dependency

* Add deprecation messages

* Modify markdown description

* Add year

* Typo fix

---------

Co-authored-by: Henrique Santos <henrique.santos@freiheit.com>

docs/data-sources/argus_scrapeconfig.md

@@ -34,7 +34,7 @@ data "stackit_argus_scrapeconfig" "example" {
 - `basic_auth` (Attributes) A basic authentication block. (see [below for nested schema](#nestedatt--basic_auth))
 - `id` (String) Terraform's internal data source. ID. It is structured as "`project_id`,`instance_id`,`name`".
 - `metrics_path` (String) Specifies the job scraping url path.
-- `saml2` (Attributes) A SAML2 configuration block (see [below for nested schema](#nestedatt--saml2))
+- `saml2` (Attributes) A SAML2 configuration block. (see [below for nested schema](#nestedatt--saml2))
 - `sample_limit` (Number) Specifies the scrape sample limit.
 - `scheme` (String) Specifies the http scheme.
 - `scrape_interval` (String) Specifies the scrape interval as duration string.
@@ -55,7 +55,7 @@ Read-Only:
 
 Read-Only:
 
-- `enable_url_parameters` (Boolean) Are URL parameters be enabled?
+- `enable_url_parameters` (Boolean) Specifies if URL parameters are enabled
 
 
 <a id="nestedatt--targets"></a>

docs/data-sources/loadbalancer.md

@@ -69,6 +69,10 @@ Read-Only:
 <a id="nestedatt--target_pools"></a>
 ### Nested Schema for `target_pools`
 
+Optional:
+
+- `session_persistence` (Attributes) Here you can setup various session persistence options, so far only "`use_source_ip_address`" is supported. (see [below for nested schema](#nestedatt--target_pools--session_persistence))
+
 Read-Only:
 
 - `active_health_check` (Attributes) (see [below for nested schema](#nestedatt--target_pools--active_health_check))
@@ -76,6 +80,14 @@ Read-Only:
 - `target_port` (Number) Identical port number where each target listens for traffic.
 - `targets` (Attributes List) List of all targets which will be used in the pool. Limited to 250. (see [below for nested schema](#nestedatt--target_pools--targets))
 
+<a id="nestedatt--target_pools--session_persistence"></a>
+### Nested Schema for `target_pools.session_persistence`
+
+Optional:
+
+- `use_source_ip_address` (Boolean) If true then all connections from one source IP address are redirected to the same target. This setting changes the load balancing algorithm to Maglev.
+
+
 <a id="nestedatt--target_pools--active_health_check"></a>
 ### Nested Schema for `target_pools.active_health_check`
 

docs/data-sources/postgresql_credential.md

@@ -4,12 +4,15 @@ page_title: "stackit_postgresql_credential Data Source - stackit"
 subcategory: ""
 description: |-
   PostgreSQL credential data source schema. Must have a region specified in the provider configuration.
+  !> The STACKIT PostgreSQL service will reach its end of support on June 30th 2024. Data sources of this type will stop working after that. Use stackitpostgresflexuser instead. For more details, check https://docs.stackit.cloud/stackit/en/bring-your-data-to-stackit-postgresql-flex-138347648.html
 ---
 
 # stackit_postgresql_credential (Data Source)
 
 PostgreSQL credential data source schema. Must have a `region` specified in the provider configuration.
 
+!> The STACKIT PostgreSQL service will reach its end of support on June 30th 2024. Data sources of this type will stop working after that. Use stackit_postgresflex_user instead. For more details, check https://docs.stackit.cloud/stackit/en/bring-your-data-to-stackit-postgresql-flex-138347648.html
+
 ## Example Usage
 
 ```terraform

docs/data-sources/postgresql_instance.md

@@ -4,12 +4,15 @@ page_title: "stackit_postgresql_instance Data Source - stackit"
 subcategory: ""
 description: |-
   PostgreSQL instance data source schema. Must have a region specified in the provider configuration.
+  !> The STACKIT PostgreSQL service will reach its end of support on June 30th 2024. Data sources of this type will stop working after that. Use stackitpostgresflexinstance instead. For more details, check https://docs.stackit.cloud/stackit/en/bring-your-data-to-stackit-postgresql-flex-138347648.html
 ---
 
 # stackit_postgresql_instance (Data Source)
 
 PostgreSQL instance data source schema. Must have a `region` specified in the provider configuration.
 
+!> The STACKIT PostgreSQL service will reach its end of support on June 30th 2024. Data sources of this type will stop working after that. Use stackit_postgresflex_instance instead. For more details, check https://docs.stackit.cloud/stackit/en/bring-your-data-to-stackit-postgresql-flex-138347648.html
+
 ## Example Usage
 
 ```terraform