move changelog entry to Upcoming Release

Author: grizzlytheodore

src/Compute/Compute/ChangeLog.md

@@ -19,11 +19,11 @@
         - Additional information about change #1
 -->
 ## Upcoming Release
+* New cmdlet 'Invoke-AzVmAssessPatch'
 
 ## Version 4.2.1
 * Added warning when using `New-AzVmss` without "latest" image version
 * Added '-Location' as optional positional parameter to Get-AzComputeResourceSku cmdlet
-* New cmdlet 'Invoke-AzVmAssessPatch'
 
 ## Version 4.2.0
 * Added SimulateEviction parameter to Set-AzVM and Set-AzVmssVM cmdlets.