Update go-sqlite3 to v1.14.53 to drop two C compiler warnings (closes #245)

Its SQLite 3.54.1 amalgamation fixes both -Wdiscarded-qualifiers warnings
gcc 15 printed when building on the host.

Model: opus-5-5

TODO.md

@@ -57,6 +57,9 @@ File an issue for each problem the run finds.
 
 # Completed Steps
 
+- 2026-11-10: `github.com/mattn/go-sqlite3` is at v1.14.53, so building on the
+  host no longer prints its two C compiler warnings (closes
+  https://git.eeqj.de/sneak/routewatch/issues/245).
 - 2026-11-10: `README.md` and this file are read whole against the rules of
   https://git.eeqj.de/sneak/routewatch/issues/157, and every statement except
   measured figures and what outside services do is checked against the code on