Merge pull request #2239 from OctopusDeploy/tmm/dep_az_rm

Add AzureRM to deprecations

src/pages/docs/deprecations/index.md

@@ -1,7 +1,7 @@
 ---
 layout: src/layouts/Default.astro
 pubDate: 2023-01-01
-modDate: 2023-11-20
+modDate: 2024-04-17
 title: Deprecations
 description: Upcoming and past deprecations by version for Octopus Server
 navOrder: 300
@@ -32,6 +32,17 @@ To provide ample time to act, from Octopus Server `2024.1`, workloads that run o
 
 Further notes about this pending change are mentioned in the [2024.1 deprecation blog post](https://octopus.com/blog/2024-deprecated-features#windows-server-2008)
 
+## Deprecations for 2024.3
+
+### Azure Resource Manager Powershell Module
+The AzureRM Powershell modules were Microsoft’s way of integrating Powershell with Azure resources however this has since been 
+deprecated by Microsoft in favor of the Azure CLI or the Az Powershell modules.
+
+These modules were [deprecated by Microsoft](https://learn.microsoft.com/en-us/powershell/azure/azurerm-retirement-overview) (as of 29-February-2024).
+
+AzureRm will remain available until July 2024 (albeit with an in-app warning), but users will be required to move to either `az cli` or the `az module for powershell` 
+for Azure authentication thereafter.
+
 ## Deprecations for 2024.1
 
 ### Helm V2