Update PDFio with fallthrough fix.

michaelrsweet · michaelrsweet · commit ca1648af3bfd · 2025-09-25T17:50:13.000-04:00
diff --git a/pdfio b/pdfio
@@ -1 +1 @@
-Subproject commit dc094186605e566bf063211cd2f23e921c88c5d4
+Subproject commit ef8dee325aefc82f5842b44be5e2c48e800b5f76
