Update GBWTGraph (see vgteam#4517)

jltsiren · jltsiren · commit 9ff0ea8b920f · 2025-02-03T19:14:00.000-08:00
diff --git a/deps/gbwtgraph b/deps/gbwtgraph
@@ -1 +1 @@
-Subproject commit ebb77a18c1fd5d13bb9ac3cc1f6fc75807b742f2
+Subproject commit a0da8ea815662c4f543d6ba781a0d4061e18820e
