chore: update mysql-otp to 1.7.2

apps/emqx_connector/rebar.config

@@ -9,7 +9,7 @@
     {emqx, {path, "../emqx"}},
     {emqx_resource, {path, "../emqx_resource"}},
     {eldap2, {git, "https://github.com/emqx/eldap2", {tag, "v0.2.2"}}},
-    {mysql, {git, "https://github.com/emqx/mysql-otp", {tag, "1.7.1"}}},
+    {mysql, {git, "https://github.com/emqx/mysql-otp", {tag, "1.7.2"}}},
     {epgsql, {git, "https://github.com/emqx/epgsql", {tag, "4.7.0.1"}}},
     %% NOTE: mind poolboy version when updating mongodb-erlang version
     {mongodb, {git, "https://github.com/emqx/mongodb-erlang", {tag, "v3.0.19"}}},