day2: align with Rancher 2.8.4 version

Author: hardys

asciidoc/day2/mgmt-cluster.adoc

@@ -162,8 +162,8 @@ helm fetch rancher-prime/rancher --version=X.Y.Z
 ----
 base64 -w 0 rancher-X.Y.Z.tgz  > rancher-X.Y.Z-encoded.txt
 
-# Example for Rancher 2.8.3
-base64 -w 0 rancher-2.8.3.tgz  > rancher-2.8.3-encoded.txt
+# Example for Rancher 2.8.4
+base64 -w 0 rancher-2.8.4.tgz  > rancher-2.8.4-encoded.txt
 ----
 
 . Make a copy of the `rancher.yaml` file that we will edit:
@@ -179,8 +179,8 @@ cp /var/lib/rancher/rke2/server/manifests/rancher.yaml ./rancher.yaml
 ----
 sed -i -e "s|chartContent:.*|chartContent: $(<rancher-X.Y.Z-encoded.txt)|" -e "s|version:.*|version: X.Y.Z|" rancher.yaml
 
-# Example for Rancher 2.8.3
-sed -i -e "s|chartContent:.*|chartContent: $(<rancher-2.8.3-encoded.txt)|" -e "s|version:.*|version: 2.8.3|" rancher.yaml
+# Example for Rancher 2.8.4
+sed -i -e "s|chartContent:.*|chartContent: $(<rancher-2.8.4-encoded.txt)|" -e "s|version:.*|version: 2.8.4|" rancher.yaml
 ----
 +
 [NOTE]
@@ -245,9 +245,9 @@ rancher-webhook-649dcc48b4-zqjs7   1/1     Running     0          100s
 ----
 kubectl get settings.management.cattle.io server-version
 
-# Example output for Rancher 2.8.3 upgrade
+# Example output for Rancher 2.8.4 upgrade
 NAME             VALUE
-server-version   v2.8.3
+server-version   v2.8.4
 ----
 
 === Non-EIB created Rancher instance
@@ -301,9 +301,9 @@ helm upgrade rancher rancher-prime/rancher \
 ----
 kubectl get settings.management.cattle.io server-version
 
-# Example output for Rancher 2.8.3 upgrade
+# Example output for Rancher 2.8.4 upgrade
 NAME             VALUE
-server-version   v2.8.3
+server-version   v2.8.4
 ----
 
 _For additional information on the Rancher helm chart upgrade, check link:https://ranchermanager.docs.rancher.com/getting-started/installation-and-upgrade/install-upgrade-on-a-kubernetes-cluster/upgrades[here]._