Fixing systest to use up to date plugin

prevents some failures when running

Author: ferd

systest/all_SUITE_data/resource_plugins/rebar.config

@@ -1,6 +1,6 @@
 %% Sample provided by @tothlac
 {plugins, [
-    {rebar_tidy_deps, ".*", {git, "https://github.com/ferd/rebar3-tidy-deps-plugin.git"}},
+    {rebar_tidy_deps, ".*", {git, "https://github.com/tothlac/rebar3-tidy-deps-plugin.git"}},
     {rebar_alias, {git, "https://github.com/tsloughter/rebar_alias.git"}},
     rebar3_appup_plugin
 ]}.