use wp_json_encode() in favor of json_encode()

inc/class-antivirus-safebrowsing.php

@@ -38,7 +38,7 @@ public static function check_safe_browsing() {
 				'headers' => array(
 					'Content-Type' => 'application/json',
 				),
-				'body'    => json_encode(
+				'body'    => wp_json_encode(
 					array(
 						'client'     => array(
 							'clientId'      => 'wpantivirus',

tests/bootstrap.php

@@ -97,3 +97,18 @@ public function parent() {
 		return $this->get( 'parent' );
 	}
 }
+
+// phpcs:disable Universal.Files.SeparateFunctionsFromOO.Mixed
+
+/**
+ * Encodes a variable into JSON, with some sanity checks.
+ *
+ * @param mixed $data    Variable (usually an array or object) to encode as JSON.
+ * @param int   $options Optional. Options to be passed to json_encode(). Default 0.
+ * @param int   $depth   Optional. Maximum depth to walk through $data. Must be
+ *                       greater than 0. Default 512.
+ * @return string|false The JSON encoded string, or false if it cannot be encoded.
+ */
+function wp_json_encode( $data, $options = 0, $depth = 512 ) {
+	return json_encode( $data, $options, $depth );
+}