Set minimal compatibility to wp 6.0

Author: thijsoo

.github/workflows/integrationtest.yml

@@ -27,7 +27,7 @@ jobs:
       matrix:
         include:
           - php_version: "5.6"
-            wp_version: "5.9"
+            wp_version: "6.0"
             multisite: true
 
           - php_version: "7.0"
@@ -44,7 +44,7 @@ jobs:
 
           # WP 5.6 is the earliest version which (sort of) supports PHP 8.0.
           - php_version: "8.0"
-            wp_version: "5.9"
+            wp_version: "6.0"
             multisite: false
 
           # WP 5.9 is the earliest version which (sort of) supports PHP 8.1.

tests/unit/bootstrap.php

@@ -37,7 +37,7 @@
 
 define( 'YOAST_SEO_PHP_REQUIRED', '5.6' );
 define( 'YOAST_SEO_WP_TESTED', '6.1.1' );
-define( 'YOAST_SEO_WP_REQUIRED', '5.9' );
+define( 'YOAST_SEO_WP_REQUIRED', '6.0' );
 
 if ( ! defined( 'WPSEO_NAMESPACES' ) ) {
 	define( 'WPSEO_NAMESPACES', true );

tests/unit/inc/addon-manager-test.php

@@ -533,7 +533,7 @@ public function test_check_for_updates( $addons, $data, $expected, $message ) {
 				[
 					'wordpress-seo/wp-seo.php' => [
 						'update' => [
-							'tested'       => '5.9',
+							'tested'       => '6.0',
 							'requires_php' => '5.6',
 						],
 					],
@@ -546,7 +546,7 @@ public function test_check_for_updates( $addons, $data, $expected, $message ) {
 
 		// Now check that the Premium plugin won't show updates, if the requirement for the WP version coming from Yoast free, is not met.
 		if ( isset( $addons['wp-seo-premium.php'] ) ) {
-			$wp_version = '5.8';
+			$wp_version = '5.9';
 			$updates    = $this->instance->check_for_updates( $data );
 
 			$this->assertTrue( isset( $updates->no_update['wp-seo-premium.php'] ) );

wp-seo-main.php

@@ -36,7 +36,7 @@
 
 define( 'YOAST_SEO_PHP_REQUIRED', '5.6' );
 define( 'YOAST_SEO_WP_TESTED', '6.1.1' );
-define( 'YOAST_SEO_WP_REQUIRED', '5.9' );
+define( 'YOAST_SEO_WP_REQUIRED', '6.0' );
 
 if ( ! defined( 'WPSEO_NAMESPACES' ) ) {
 	define( 'WPSEO_NAMESPACES', true );

wp-seo.php

@@ -16,7 +16,7 @@
  * Text Domain: wordpress-seo
  * Domain Path: /languages/
  * License:     GPL v3
- * Requires at least: 5.9
+ * Requires at least: 6.0
  * Requires PHP: 5.6.20
  *
  * WC requires at least: 3.0