Twenty Nineteen: Correct the required WordPress version in theme headers.

The required version was previously set to two different values:
* 4.7 in the theme's `functions.php` file.
* 4.9.6 in theme headers, because of the `the_privacy_policy_link()` function usage in `footer.php`.

However, as `the_privacy_policy_link()` call is wrapped in a `function_exists()` check, it does not affect the requirements in practice.

This commit aims to correct the discrepancy by updating theme headers to match the actual required WP version.

Follow-up to [43808], [43892].

Props poena, kafleg, felipeelia, audrasjb, huzaifaalmesbah, shailu25, nicolefurlan, oglekler.
Fixes #59557.
Built from https://develop.svn.wordpress.org/trunk@56952


git-svn-id: http://core.svn.wordpress.org/trunk@56463 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-content/themes/twentynineteen/readme.txt

@@ -1,7 +1,7 @@
 === Twenty Nineteen ===
 Contributors: wordpressdotorg
 Tags: one-column, accessibility-ready, custom-colors, custom-menu, custom-logo, editor-style, featured-images, footer-widgets, rtl-language-support, sticky-post, threaded-comments, translation-ready, block-patterns
-Requires at least: 4.9.6
+Requires at least: 4.7
 Tested up to: 6.3
 Requires PHP: 5.2.4
 Stable tag: 2.6

wp-content/themes/twentynineteen/style-rtl.css

@@ -6,7 +6,7 @@ Author: the WordPress team
 Author URI: https://wordpress.org/
 Description: Our 2019 default theme is designed to show off the power of the block editor. It features custom styles for all the default blocks, and is built so that what you see in the editor looks like what you'll see on your website. Twenty Nineteen is designed to be adaptable to a wide range of websites, whether you’re running a photo blog, launching a new business, or supporting a non-profit. Featuring ample whitespace and modern sans-serif headlines paired with classic serif body text, it's built to be beautiful on all screen sizes.
 Tested up to: 6.3
-Requires at least: 4.9.6
+Requires at least: 4.7
 Requires PHP: 5.2.4
 Version: 2.6
 License: GNU General Public License v2 or later

wp-content/themes/twentynineteen/style.css

@@ -6,7 +6,7 @@ Author: the WordPress team
 Author URI: https://wordpress.org/
 Description: Our 2019 default theme is designed to show off the power of the block editor. It features custom styles for all the default blocks, and is built so that what you see in the editor looks like what you'll see on your website. Twenty Nineteen is designed to be adaptable to a wide range of websites, whether you’re running a photo blog, launching a new business, or supporting a non-profit. Featuring ample whitespace and modern sans-serif headlines paired with classic serif body text, it's built to be beautiful on all screen sizes.
 Tested up to: 6.3
-Requires at least: 4.9.6
+Requires at least: 4.7
 Requires PHP: 5.2.4
 Version: 2.6
 License: GNU General Public License v2 or later

wp-content/themes/twentynineteen/style.scss

@@ -5,7 +5,7 @@ Author: the WordPress team
 Author URI: https://wordpress.org/
 Description: Our 2019 default theme is designed to show off the power of the block editor. It features custom styles for all the default blocks, and is built so that what you see in the editor looks like what you'll see on your website. Twenty Nineteen is designed to be adaptable to a wide range of websites, whether you’re running a photo blog, launching a new business, or supporting a non-profit. Featuring ample whitespace and modern sans-serif headlines paired with classic serif body text, it's built to be beautiful on all screen sizes.
 Tested up to: 6.3
-Requires at least: 4.9.6
+Requires at least: 4.7
 Requires PHP: 5.2.4
 Version: 2.6
 License: GNU General Public License v2 or later

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.4-beta4-56951';
+$wp_version = '6.4-beta4-56952';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.