chore: bump to emqx/eredis_cluster 0.7.5

* Full OTP-25 compat.
* Password censoring in status and crash reports.
* No more crashes on query timeout.

apps/emqx_connector/rebar.config

@@ -14,7 +14,7 @@
     %% NOTE: mind poolboy version when updating mongodb-erlang version
     {mongodb, {git, "https://github.com/emqx/mongodb-erlang", {tag, "v3.0.13"}}},
     %% NOTE: mind poolboy version when updating eredis_cluster version
-    {eredis_cluster, {git, "https://github.com/emqx/eredis_cluster", {tag, "0.7.1"}}},
+    {eredis_cluster, {git, "https://github.com/emqx/eredis_cluster", {tag, "0.7.5"}}},
     %% mongodb-erlang uses a special fork https://github.com/comtihon/poolboy.git
     %% (which has overflow_ttl feature added).
     %% However, it references `{branch, "master}` (commit 9c06a9a on 2021-04-07).