Update 01_installation.md

Signed-off-by: dembelekaro <157847339+dembelekaro@users.noreply.github.com>

Author: dembelekaro

documentation/testnet/getting_started/01_installation.md

@@ -35,9 +35,9 @@ which verifies transactions and stores the encrypted state applications in a pub
 
 The following are **minimum** requirements to run an Aleo node:
  - **OS**: 64-bit architectures only, latest up-to-date for security
-    - Clients: Ubuntu 20.04, macOS Ventura or later, Windows 11 or later
-    - Provers: Ubuntu 20.04, macOS Ventura or later
-    - Validators: Ubuntu 20.04
+    - Clients: Ubuntu 22.04, macOS Ventura or later, Windows 11 or later
+    - Provers: Ubuntu 22.04, macOS Ventura or later
+    - Validators: Ubuntu 22.04
  - **CPU**: 64-bit architectures only
     - Clients: 16-cores
     - Provers: 32-cores (64-cores preferred)