chore: upgrade to rulesql 0.2.1 from 0.2.0

a minor enhancement: rule SQL without WHERE or FROM will
return "Missing FROM or WHERE" instead of "syntax error before {SELECT"

mix.exs

@@ -65,7 +65,7 @@ defmodule EMQXUmbrella.MixProject do
       # maybe forbid to fetch quicer
       {:emqtt,
        github: "emqx/emqtt", tag: "1.10.1", override: true, system_env: maybe_no_quic_env()},
-      {:rulesql, github: "emqx/rulesql", tag: "0.2.0"},
+      {:rulesql, github: "emqx/rulesql", tag: "0.2.1"},
       {:observer_cli, "1.7.1"},
       {:system_monitor, github: "ieQu1/system_monitor", tag: "3.0.3"},
       {:telemetry, "1.1.0"},

rebar.config

@@ -91,7 +91,7 @@
     {replayq, {git, "https://github.com/emqx/replayq.git", {tag, "0.3.8"}}},
     {pbkdf2, {git, "https://github.com/emqx/erlang-pbkdf2.git", {tag, "2.0.4"}}},
     {emqtt, {git, "https://github.com/emqx/emqtt", {tag, "1.10.1"}}},
-    {rulesql, {git, "https://github.com/emqx/rulesql", {tag, "0.2.0"}}},
+    {rulesql, {git, "https://github.com/emqx/rulesql", {tag, "0.2.1"}}},
     % NOTE: depends on recon 2.5.x
     {observer_cli, "1.7.1"},
     {system_monitor, {git, "https://github.com/ieQu1/system_monitor", {tag, "3.0.3"}}},