Update macOS installer ReadMe and Welcome screens for 3.12.0b1. (GH-104739)

Author: ned-deily

Mac/BuildScript/resources/ReadMe.rtf

@@ -1,4 +1,4 @@
-{\rtf1\ansi\ansicpg1252\cocoartf2639
+{\rtf1\ansi\ansicpg1252\cocoartf2709
 \cocoatextscaling0\cocoaplatform0{\fonttbl\f0\fswiss\fcharset0 Helvetica;\f1\fswiss\fcharset0 Helvetica-Bold;\f2\fswiss\fcharset0 Helvetica-Oblique;
 \f3\fmodern\fcharset0 CourierNewPSMT;\f4\fmodern\fcharset0 Courier;}
 {\colortbl;\red255\green255\blue255;}
@@ -11,7 +11,7 @@
 \pard\tx720\tx1440\tx2160\tx2880\tx3600\tx4320\tx5040\tx5760\tx6480\tx7200\tx7920\tx8640\partightenfactor0
 
 \f1\b \cf0 NOTE: 
-\f0\b0 This is an alpha preview of Python 3.12.0, the next feature release of Python 3.  It is not intended for production use.\
+\f0\b0 This is a beta preview of Python 3.12.0, the next feature release of Python 3.  It is not intended for production use.\
 \pard\tx720\tx1440\tx2160\tx2880\tx3600\tx4320\tx5040\tx5760\tx6480\tx7200\tx7920\tx8640\pardirnatural\partightenfactor0
 \cf0 \
 \pard\tx720\tx1440\tx2160\tx2880\tx3600\tx4320\tx5040\tx5760\tx6480\tx7200\tx7920\tx8640\pardirnatural\partightenfactor0

Mac/BuildScript/resources/Welcome.rtf

@@ -1,4 +1,4 @@
-{\rtf1\ansi\ansicpg1252\cocoartf2708
+{\rtf1\ansi\ansicpg1252\cocoartf2709
 \cocoascreenfonts1\cocoatextscaling0\cocoaplatform0{\fonttbl\f0\fswiss\fcharset0 Helvetica;\f1\fswiss\fcharset0 Helvetica-Bold;\f2\fmodern\fcharset0 CourierNewPSMT;
 }
 {\colortbl;\red255\green255\blue255;}
@@ -12,8 +12,9 @@
 \f1\b macOS $MACOSX_DEPLOYMENT_TARGET
 \f0\b0 .\
 \
+\pard\tx720\tx1440\tx2160\tx2880\tx3600\tx4320\tx5040\tx5760\tx6480\tx7200\tx7920\tx8640\partightenfactor0
 
-\f1\b Python for macOS
+\f1\b \cf0 Python for macOS
 \f0\b0  consists of the {\field{\*\fldinst{HYPERLINK "https://www.python.org"}}{\fldrslt Python}} programming language interpreter and its batteries-included standard library to allow easy access to macOS features.  It also includes the Python integrated development environment, 
 \f1\b IDLE
 \f0\b0 .  You can also use the included 
@@ -25,28 +26,6 @@ At the end of this install, click on
 \f0  to install a set of current SSL root certificates.\
 \
 
-\f1\b macOS 13 Ventura users
-\f0\b0 :  Due to an issue with the macOS 
-\f1\b Installer
-\f0\b0  app, installation of some third-party packages including this Python package may fail with a vague 
-\f1\b "The installer encountered an error"
-\f0\b0  message if the 
-\f1\b Installer
-\f0\b0  app does not have permission to access the folder containing the downloaded installer file, typically in the 
-\f1\b Downloads
-\f0\b0  folder. Go to 
-\f1\b System Settings
-\f0\b0  -> 
-\f1\b Privacy & Security
-\f0\b0  -> 
-\f1\b Files and Folders
-\f0\b0 , then click the mark in front of 
-\f1\b Installer
-\f0\b0  to expand, and enable 
-\f1\b Downloads Folder
-\f0\b0  by moving the toggle to the right. See {\field{\*\fldinst{HYPERLINK "https://github.com/python/cpython/issues/103207"}}{\fldrslt https://github.com/python/cpython/issues/103207}} for up-to-date information on this issue.\
-\
-
 \f1\b NOTE: 
-\f0\b0 This is an alpha test preview of Python 3.12.0, the next feature release of Python 3.  It is not intended for production use.\
+\f0\b0 This is a beta test preview of Python 3.12.0, the next feature release of Python 3.  It is not intended for production use.\
 }