Update stubs

Author: phpstan-bot

Diff for: stubs/ext/bz2/bzerrno.php

@@ -1,6 +1,6 @@
 <?php 
 
 /** @param resource $bz */
-function bzerrno($bz) : int
+function bzerrno($bz) : int|false
 {
 }

Diff for: stubs/ext/bz2/bzerror.php

@@ -1,6 +1,6 @@
 <?php 
 
 /** @param resource $bz */
-function bzerror($bz) : array
+function bzerror($bz) : array|false
 {
 }

Diff for: stubs/ext/bz2/bzerrstr.php

@@ -1,6 +1,6 @@
 <?php 
 
 /** @param resource $bz */
-function bzerrstr($bz) : string
+function bzerrstr($bz) : string|false
 {
 }