chore(rebar.config): Snabbkaffee should be a default dependency

rebar.config

@@ -52,6 +52,7 @@
     , {recon, {git, "https://github.com/ferd/recon", {tag, "2.5.1"}}}
     , {observer_cli, "1.6.1"} % NOTE: depends on recon 2.5.1
     , {getopt, "1.0.1"}
+    , {snabbkaffe, {git, "https://github.com/kafka4beam/snabbkaffe.git", {tag, "0.8.2"}}}
     ]}.
 
 {xref_ignores,

rebar.config.erl

@@ -102,7 +102,6 @@ test_plugins() ->
 test_deps() ->
     [ {bbmustache, "1.10.0"}
     , {emqx_ct_helpers, {git, "https://github.com/emqx/emqx-ct-helpers", {tag, "1.3.6"}}}
-    , {snabbkaffe, {git, "https://github.com/kafka4beam/snabbkaffe.git", {tag, "0.8.2"}}}
     , meck
     ].