Patch norad for empty guideline names

Google's roboto-serif repo (and others in the wild) has UFOs whose
fontinfo guidelines carry name=""; released norad (<=0.18.4) rejects
the whole fontinfo load over it, so fontc fails the build with
'failed to load font info data'. linebender/norad#414 fixed this on
norad main (1c8ac19) but no release carries it yet, so pin norad to
that rev alongside the fontations patch. Drop when norad ships a
release past 0.18.4.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: tomconroy

Cargo.lock

@@ -62,3 +62,6 @@ font-types = { git = "https://github.com/tomconroy/fontations.git", rev = "66820
 read-fonts = { git = "https://github.com/tomconroy/fontations.git", rev = "668202b5" }
 write-fonts = { git = "https://github.com/tomconroy/fontations.git", rev = "668202b5" }
 skrifa = { git = "https://github.com/tomconroy/fontations.git", rev = "668202b5" }
+# norad with linebender/norad#414 (empty guideline names); drop once norad
+# ships a release past 0.18.4.
+norad = { git = "https://github.com/linebender/norad.git", rev = "1c8ac19b1a1a4d21bb27d72161b63043cd42cc52" }