doc: DOCSP-54401 -- Adds mention of support for TLS 1.3 in docs (#1643)

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Leo Antoli <430982+lantoli@users.noreply.github.com>

Author: 3 people

cfn-resources/cluster/docs/processargs.md

@@ -89,7 +89,7 @@ _Update requires_: [No interruption](https://docs.aws.amazon.com/AWSCloudFormati
 
 #### MinimumEnabledTLSProtocol
 
-Minimum Transport Layer Security (TLS) version that the cluster accepts for incoming connections. Clusters using TLS 1.0 or 1.1 should consider setting TLS 1.2 as the minimum TLS protocol version.
+Minimum Transport Layer Security (TLS) version that the cluster accepts for incoming connections. Valid values are TLS1_2 and TLS1_3.
 
 _Required_: No
 

cfn-resources/cluster/mongodb-atlas-cluster.json

@@ -253,7 +253,7 @@
         },
         "MinimumEnabledTLSProtocol": {
           "type": "string",
-          "description": "Minimum Transport Layer Security (TLS) version that the cluster accepts for incoming connections. Clusters using TLS 1.0 or 1.1 should consider setting TLS 1.2 as the minimum TLS protocol version."
+          "description": "Minimum Transport Layer Security (TLS) version that the cluster accepts for incoming connections. Valid values are TLS1_2 and TLS1_3."
         },
         "TlsCipherConfigMode": {
           "type": "string",