Depend on Ra 2.4.0

Ra 2.4.0 introduces new reply modes which control which member of a
cluster performs the `gen_statem:reply/2` to a command. This can be
used to block the caller until the command has been handled by a given
member. The child commit will introduce a way to pass the new reply
modes in `khepri:command_options()`.

rebar.config

@@ -1,7 +1,7 @@
 %% vim:ft=erlang:
 {minimum_otp_vsn, "24.0"}.
 
-{deps, [{ra, "2.1.0"}]}.
+{deps, [{ra, "2.4.0"}]}.
 
 {project_plugins, [rebar3_proper,
                    covertool,

rebar.lock

@@ -1,17 +1,17 @@
 {"1.2.0",
 [{<<"aten">>,{pkg,<<"aten">>,<<"0.5.8">>},1},
  {<<"gen_batch_server">>,{pkg,<<"gen_batch_server">>,<<"0.8.8">>},1},
- {<<"ra">>,{pkg,<<"ra">>,<<"2.1.0">>},0},
+ {<<"ra">>,{pkg,<<"ra">>,<<"2.4.0">>},0},
  {<<"seshat">>,{pkg,<<"seshat">>,<<"0.3.2">>},1}]}.
 [
 {pkg_hash,[
  {<<"aten">>, <<"B5C97F48517C4F37F26A519AA57A00A31FF1B8EA4324EC1CAE27F818ED5C0DB2">>},
  {<<"gen_batch_server">>, <<"7840A1FA63EE1EFFC83E8A91D22664847A2BA1192D30EAFFFD914ACB51578068">>},
- {<<"ra">>, <<"A58527F480CCC8AF68B5041B76DD6CF46B3202759D3D63567720212416BF744C">>},
+ {<<"ra">>, <<"66E9163ACB80CD8997B79FD1F9543FE02F7842C8D38F46F21689082FD73F8D89">>},
  {<<"seshat">>, <<"16CF14E92AECB927D8840387B97A362D0781997A906D0F3BBB274EB0EC3D74D9">>}]},
 {pkg_hash_ext,[
  {<<"aten">>, <<"64D40A8CF0DDFEA4E13AF00B7327F0925147F83612D0627D9506CBFFE90C13EF">>},
  {<<"gen_batch_server">>, <<"C3E6A1A2A0FB62AEE631A98CFA0FD8903E9562422CBF72043953E2FB1D203017">>},
- {<<"ra">>, <<"24001B370C23690AF3FE42DDCA353C71C45D1EDC1A0E56F9C1BF30BD4C37D14E">>},
+ {<<"ra">>, <<"F716146EE1755823FBFF741669053EFC76E241CAA95465782FC4C0A4389EB40C">>},
  {<<"seshat">>, <<"20D820ACBEEF9D07298EE863D0C9D06F8E620ACBA100939EBB2925E4D6B0DFC7">>}]}
 ].