[ci skip] PHP 8.5 | UPGRADING: document IMAGETYPE_HEIF constant (#20713)

rodrigoprimo · web-flow · commit b19a3536e83a · 2025-12-16T19:45:08.000+01:00
diff --git a/UPGRADING b/UPGRADING
@@ -935,6 +935,7 @@ PHP 8.5 UPGRADE NOTES
   . T_PIPE.
 
 - Standard:
+  . IMAGETYPE_HEIF.
   . IMAGETYPE_SVG when libxml is loaded.
 
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