Update Resource processor Ubuntu Image (#3902)

* Update clean_validation_envs.yml

* update

* update BRANCH_LAST_ACTIVITY_IN_HOURS_FOR_STOP: 8

* update core resource processor image

* remove clean env

* update version

* update changelog

CHANGELOG.md

@@ -8,6 +8,7 @@ FEATURES:
 ENHANCEMENTS:
 
 BUG FIXES:
+* Update to Resource Processor Image, now using Ubuntu 22.04 (jammy). Part of ([#3523](https://github.com/microsoft/AzureTRE/issues/3523))
 
 COMPONENTS:
 

core/terraform/resource_processor/vmss_porter/main.tf

@@ -107,8 +107,8 @@ resource "azurerm_linux_virtual_machine_scale_set" "vm_linux" {
 
   source_image_reference {
     publisher = "Canonical"
-    offer     = "UbuntuServer"
-    sku       = "18.04-LTS"
+    offer     = "0001-com-ubuntu-server-jammy"
+    sku       = "22_04-lts"
     version   = "latest"
   }
 

core/version.txt

@@ -1 +1 @@
-__version__ = "0.9.7"
+__version__ = "0.9.8"