chore: pin rebar plugins and test deps

apps/emqx/rebar.config

@@ -23,13 +23,13 @@
     , {snabbkaffe, {git, "https://github.com/kafka4beam/snabbkaffe.git", {tag, "0.14.1"}}}
     ]}.
 
-{plugins, [rebar3_proper]}.
+{plugins, [{rebar3_proper, "0.12.1"}]}.
 {extra_src_dirs, [{"etc", [recursive]}]}.
 {profiles, [
    {test,
        [{deps,
-           [ meck
-           , proper
+           [ {meck, "0.9.2"}
+           , {proper, "1.4.0"}
            , {bbmustache,"1.10.0"}
            , {emqtt, {git, "https://github.com/emqx/emqtt", {tag, "1.4.3"}}}
            ]},

rebar.config.erl

@@ -114,21 +114,21 @@ plugins(HasElixir) ->
       %% emqx main project does not require port-compiler
       %% pin at root level for deterministic
     , {pc, {git, "https://github.com/emqx/port_compiler.git", {tag, "v1.11.1"}}}
-    | [ rebar_mix || HasElixir ]
+    | [ {rebar_mix, "0.5.1"} || HasElixir ]
     ]
     %% test plugins are concatenated to default profile plugins
     %% otherwise rebar3 test profile runs are super slow
     ++ test_plugins().
 
 test_plugins() ->
-    [ rebar3_proper,
-      {coveralls, {git, "https://github.com/emqx/coveralls-erl", {branch, "fix-git-info"}}}
+    [ {rebar3_proper, "0.12.1"}
+    , {coveralls, {git, "https://github.com/emqx/coveralls-erl", {tag, "v2.2.0-emqx-1"}}}
     ].
 
 test_deps() ->
     [ {bbmustache, "1.10.0"}
-    , meck
-    , proper
+    , {meck, "0.9.2"}
+    , {proper, "1.4.0"}
     ].
 
 common_compile_opts() ->