[3.12] gh-105090: Replace incorrect TLSv1.2 with TLSv1.3 (GH-105404) (#107040)

Co-authored-by: Jocelyn Castellano <[email protected]>

Author: miss-islington

Doc/library/ssl.rst

@@ -2592,7 +2592,7 @@ disabled by default.
    >>> client_context.maximum_version = ssl.TLSVersion.TLSv1_3
 
 
-The SSL context created above will only allow TLSv1.2 and later (if
+The SSL context created above will only allow TLSv1.3 and later (if
 supported by your system) connections to a server. :const:`PROTOCOL_TLS_CLIENT`
 implies certificate validation and hostname checks by default. You have to
 load certificates into the context.