trillian: switch to go_1_17

It looks like this originally was broken with go1.15, but 1.4.0 works
with go1.17.

I tested and there are no go module changes (which lines up with the
go.mod version being 1.13 so nothing has changed in the deps).

pkgs/top-level/all-packages.nix

@@ -20230,7 +20230,7 @@ with pkgs;
   triehash = callPackage ../tools/misc/triehash { };
 
   trillian = callPackage ../tools/misc/trillian {
-    buildGoModule = buildGo115Module;
+    buildGoModule = buildGo117Module;
   };
 
   twolame = callPackage ../development/libraries/twolame { };