Format Updates

Sensu Upgrade 5.21 -> 6.3 Notes.md

@@ -9,6 +9,32 @@
 
 
 ### Sensu Go Upgrade to 6.3
+[Jira MSOCI-1565 ticket - Upgrade Sensu to 6.2.X](https://jira.xdr.accenturefederalcyber.com/browse/MSOCI-1565)
+
+Initial Ticket:
+```
+Sensu 6.1.3 breaks the ability for Sensu to use the proxy. This issue ( hopefully) is fixed in 6.2.0. 
+
+https://github.com/sensu/sensu-go/issues/4101
+
+https://github.com/sensu/sensu-go/pull/4113/files
+
+Done When: Sensu is upgraded to 6.2.0 
+```
+
+Ticket Update: [Decision to upgrade to 6.3](https://jira.xdr.accenturefederalcyber.com/browse/MSOCI-1565?focusedCommentId=44245&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-44245)
+
+
+Ticket conclusion: [Sensu Go GC Test and Prod env had been upgraded 100% to 6.3](https://jira.xdr.accenturefederalcyber.com/browse/MSOCI-1565?focusedCommentId=44564&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-44564)
+
+```
+[Conclusion]:
+
+    GC Test and Prod envs are both running Sensu Go 6.3 at both the 'backend', 'cli' and 'agents' from Sensu to 'entities'. 
+    We have not observed any issues within the XDR env pertaining to this upgrade.
+    Sensu Go 6.3 has introduced some newer features within the GUI that we are currently exploring usage of.
+```
+
 [Sensu Upgrade Documentation](https://docs.sensu.io/sensu-go/latest/operations/maintain-sensu/upgrade/) - as of June 17, 2021, `Sensu Go 6.3` is not being displayed in the Sensu documentation, but procedure still applies.
 
 1. Download latest packages for `Sensu backend`, `Sensu agents`, `Sensuctl` (Sensu CLI) to `Repo server` and run `yum clean all` on `Sensu Backend` server - See [Reposerver](Reposerver%20Notes.md) notes.