[skip ci] Add zend.exception_string_param_max_len to UPGRADING

TysonAndre · TysonAndre · commit 85d4b560dfe6 · 2020-07-27T09:40:24.000-04:00
For GH-5769 (mentioned in 07db641)
diff --git a/UPGRADING b/UPGRADING
@@ -930,6 +930,10 @@ PHP 8.0 UPGRADE NOTES
 11. Changes to INI File Handling
 ========================================
 
+- zend.exception_string_param_max_len
+  . New INI directive to set the maximum string length in an argument of a
+    stringified stack strace.
+
 ========================================
 12. Windows Support
 ========================================
