Update to latest PDFio 1.6.1.

michaelrsweet · michaelrsweet · commit 7d54fc47dbb3 · 2025-12-26T13:20:27.000-05:00
diff --git a/.gitmodules b/.gitmodules
@@ -1,4 +1,4 @@
 [submodule "pdfio"]
 	path = pdfio
 	url = https://github.com/michaelrsweet/pdfio.git
-	branch = master
+	branch = v1.6.x
diff --git a/pdfio b/pdfio
@@ -1 +1 @@
-Subproject commit 23eb44e80baad1b42c9329e880fae72b1b8cb121
+Subproject commit 932f237c3fcfd8463798ebd4f4835b5088454c93
