update vendored jason to 1.4.0

Author: lukaszsamson

mix.lock

@@ -5,7 +5,7 @@
   "erl2ex": {:git, "https://github.com/dazuma/erl2ex.git", "244c2d9ed5805ef4855a491d8616b8842fef7ca4", []},
   "erlex": {:hex, :erlex, "0.2.6", "c7987d15e899c7a2f34f5420d2a2ea0d659682c06ac607572df55a43753aa12e", [:mix], [], "hexpm", "2ed2e25711feb44d52b17d2780eabf998452f6efda104877a3881c2f8c0c0c75"},
   "getopt": {:hex, :getopt, "1.0.1", "c73a9fa687b217f2ff79f68a3b637711bb1936e712b521d8ce466b29cbf7808a", [:rebar3], [], "hexpm", "53e1ab83b9ceb65c9672d3e7a35b8092e9bdc9b3ee80721471a161c10c59959c"},
-  "jason_vendored": {:git, "https://github.com/elixir-lsp/jason.git", "ee95ca80cd67b3a499a14f469536140935eb4483", [branch: "vendored"]},
+  "jason_vendored": {:git, "https://github.com/elixir-lsp/jason.git", "e23c65b98411a3066ca73534b4aed1d23bcf0356", [branch: "vendored"]},
   "mix_task_archive_deps": {:git, "https://github.com/elixir-lsp/mix_task_archive_deps.git", "30fa76221def649286835685fec5d151be83c354", []},
   "nimble_parsec": {:hex, :nimble_parsec, "1.1.0", "3a6fca1550363552e54c216debb6a9e95bd8d32348938e13de5eda962c0d7f89", [:mix], [], "hexpm", "08eb32d66b706e913ff748f11694b17981c0b04a33ef470e33e11b3d3ac8f54b"},
   "patch": {:hex, :patch, "0.12.0", "2da8967d382bade20344a3e89d618bfba563b12d4ac93955468e830777f816b0", [:mix], [], "hexpm", "ffd0e9a7f2ad5054f37af84067ee88b1ad337308a1cb227e181e3967127b0235"},