Make check for requires headers an error

Author: ernilambar

includes/Checker/Checks/Plugin_Repo/Plugin_Readme_Check.php

@@ -835,7 +835,7 @@ private function check_requires_headers( Check_Result $result, string $readme_fi
 			$plugin_value = $plugin_data[ $requires[ $require ]['header_field'] ];
 
 			if ( $readme_value !== $plugin_value ) {
-				$this->add_result_warning_for_file(
+				$this->add_result_error_for_file(
 					$result,
 					sprintf(
 						/* translators: 1: readme header tag, 2: versions comparison */
@@ -847,8 +847,7 @@ private function check_requires_headers( Check_Result $result, string $readme_fi
 					$readme_file,
 					0,
 					0,
-					'https://developer.wordpress.org/plugins/wordpress-org/how-your-readme-txt-works/#readme-header-information',
-					6
+					'https://developer.wordpress.org/plugins/wordpress-org/how-your-readme-txt-works/#readme-header-information'
 				);
 			}
 		}

tests/phpunit/tests/Checker/Checks/Plugin_Readme_Check_Tests.php

@@ -549,12 +549,12 @@ public function test_run_with_mismatched_requires_headers() {
 
 		$check->run( $check_result );
 
-		$warnings = $check_result->get_warnings();
+		$errors = $check_result->get_errors();
 
-		$this->assertNotEmpty( $warnings );
-		$this->assertArrayHasKey( 'readme.txt', $warnings );
+		$this->assertNotEmpty( $errors );
+		$this->assertArrayHasKey( 'readme.txt', $errors );
 
-		$this->assertCount( 1, wp_list_filter( $warnings['readme.txt'][0][0], array( 'code' => 'readme_mismatched_header_requires' ) ) );
-		$this->assertCount( 1, wp_list_filter( $warnings['readme.txt'][0][0], array( 'code' => 'readme_mismatched_header_requires_php' ) ) );
+		$this->assertCount( 1, wp_list_filter( $errors['readme.txt'][0][0], array( 'code' => 'readme_mismatched_header_requires' ) ) );
+		$this->assertCount( 1, wp_list_filter( $errors['readme.txt'][0][0], array( 'code' => 'readme_mismatched_header_requires_php' ) ) );
 	}
 }