Mention RKE2 minor version is the same in v1.4.2 and v1.4.3

Signed-off-by: Tim Serong <[email protected]>

Author: tserong

docs/upgrade/v1-4-1-to-v1-4-3.md

@@ -12,6 +12,8 @@ title: "Upgrade from v1.4.1/v1.4.2 to v1.4.3"
 
 An **Upgrade** button appears on the **Dashboard** screen whenever a new Harvester version that you can upgrade to becomes available. For more information, see [Start an upgrade](./automatic.md#start-an-upgrade).
 
+Harvester v1.4.2 and v1.4.3 use the same minor version of RKE2 (v1.31). This makes it possible to upgrade directly from Harvester v1.4.1 to v1.4.3, without needing to upgrade to v1.4.2 first.
+
 For air-gapped environments, see [Prepare an air-gapped upgrade](./automatic.md#prepare-an-air-gapped-upgrade).
 
 ## Known issues

docs/upgrade/v1-4-2-to-v1-5-0.md

@@ -12,6 +12,8 @@ title: "Upgrade from v1.4.2/v1.4.3 to v1.5.0"
 
 An **Upgrade** button appears on the **Dashboard** screen whenever a new Harvester version that you can upgrade to becomes available. For more information, see [Start an upgrade](./automatic.md#start-an-upgrade).
 
+Harvester v1.4.2 and v1.4.3 use the same minor version of RKE2 (v1.31). This makes it possible to upgrade directly from Harvester v1.4.2 to v1.5.0, without needing to upgrade to v1.4.3 first.
+
 For air-gapped environments, see [Prepare an air-gapped upgrade](./automatic.md#prepare-an-air-gapped-upgrade).
 
 ### Update Harvester UI Extension on Rancher v2.11.0