bump certifi to 2.3.0

Author: benoitc

rebar.config

@@ -17,7 +17,7 @@
 {deps, [
         {idna, "5.1.1"},
         {mimerl, "1.0.2"},
-        {certifi, "2.0.0"},
+        {certifi, "2.3.0"},
         {metrics, "1.0.1"},
         {ssl_verify_fun, "1.1.1"}
        ]}.

rebar.config.script

@@ -10,7 +10,7 @@ Rebar2Deps0 = [{idna, ".*",
 
                {certifi, ".*",
                 {git, "https://github.com/certifi/erlang-certifi",
-                 {tag, "2.0.0"}}},
+                 {tag, "2.3.0"}}},
 
                {metrics, ".*",
                 {git, "https://github.com/benoitc/erlang-metrics",