build_release: Don't call update_3rdparty.main

main tries to parse sys.argv which will fail when called from
build_release when e.g. --asciidoc is given.

scripts/dev/build_release.py

@@ -91,7 +91,7 @@ def smoke_test(executable):
 def build_windows():
     """Build windows executables/setups."""
     utils.print_title("Updating 3rdparty content")
-    update_3rdparty.main()
+    update_3rdparty.update_pdfjs()
 
     utils.print_title("Building Windows binaries")
     parts = str(sys.version_info.major), str(sys.version_info.minor)