chore: upgrade to hocon 0.42.0

apps/emqx/rebar.config

@@ -30,7 +30,7 @@
     {esockd, {git, "https://github.com/emqx/esockd", {tag, "5.11.1"}}},
     {ekka, {git, "https://github.com/emqx/ekka", {tag, "0.19.0"}}},
     {gen_rpc, {git, "https://github.com/emqx/gen_rpc", {tag, "3.3.1"}}},
-    {hocon, {git, "https://github.com/emqx/hocon.git", {tag, "0.41.0"}}},
+    {hocon, {git, "https://github.com/emqx/hocon.git", {tag, "0.42.0"}}},
     {emqx_http_lib, {git, "https://github.com/emqx/emqx_http_lib.git", {tag, "0.5.3"}}},
     {pbkdf2, {git, "https://github.com/emqx/erlang-pbkdf2.git", {tag, "2.0.4"}}},
     {recon, {git, "https://github.com/ferd/recon", {tag, "2.5.1"}}},

changes/ce/breaking-12634.en.md

@@ -0,0 +1,10 @@
+Triple-quote string values in HOCON config files no longer support escape sequence.
+
+The detailed information can be found in [this pull request](https://github.com/emqx/hocon/pull/290).
+Here is a summary for the impact on EMQX users:
+
+- EMQX 5.6 is the first version to generate triple-quote strings in `cluster.hocon`,
+  meaning for generated configs, there is no compatibility issue.
+- For user hand-crafted configs (such as `emqx.conf`) a thorough review is needed
+  to inspect if escape sequences are used (such as `\n`, `\r`, `\t` and `\\`), if yes,
+  such strings should be changed to regular quotes (one pair of `"`) instead of triple-quotes.

changes/ce/feat-12517.en.md

@@ -12,4 +12,4 @@ rule_xlu4 {
   ~"""
 }
 ```
-See [HOCON 0.41.0](https://github.com/emqx/hocon/releases/tag/0.41.0) release note for more dtails.
+See [HOCON 0.42.0](https://github.com/emqx/hocon/releases/tag/0.42.0) release note for more dtails.

mix.exs

@@ -72,7 +72,7 @@ defmodule EMQXUmbrella.MixProject do
       # in conflict by emqtt and hocon
       {:getopt, "1.0.2", override: true},
       {:snabbkaffe, github: "kafka4beam/snabbkaffe", tag: "1.0.8", override: true},
-      {:hocon, github: "emqx/hocon", tag: "0.41.0", override: true},
+      {:hocon, github: "emqx/hocon", tag: "0.42.0", override: true},
       {:emqx_http_lib, github: "emqx/emqx_http_lib", tag: "0.5.3", override: true},
       {:esasl, github: "emqx/esasl", tag: "0.2.0"},
       {:jose, github: "potatosalad/erlang-jose", tag: "1.11.2"},

rebar.config

@@ -97,7 +97,7 @@
     {system_monitor, {git, "https://github.com/ieQu1/system_monitor", {tag, "3.0.3"}}},
     {getopt, "1.0.2"},
     {snabbkaffe, {git, "https://github.com/kafka4beam/snabbkaffe.git", {tag, "1.0.8"}}},
-    {hocon, {git, "https://github.com/emqx/hocon.git", {tag, "0.41.0"}}},
+    {hocon, {git, "https://github.com/emqx/hocon.git", {tag, "0.42.0"}}},
     {emqx_http_lib, {git, "https://github.com/emqx/emqx_http_lib.git", {tag, "0.5.3"}}},
     {esasl, {git, "https://github.com/emqx/esasl", {tag, "0.2.0"}}},
     {jose, {git, "https://github.com/potatosalad/erlang-jose", {tag, "1.11.2"}}},