Update dependency phoenix_html to v4.2.0 (#315)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

example/mix.lock

@@ -15,7 +15,7 @@
   "mime": {:hex, :mime, "2.0.6", "8f18486773d9b15f95f4f4f1e39b710045fa1de891fada4516559967276e4dc2", [:mix], [], "hexpm", "c9945363a6b26d747389aac3643f8e0e09d30499a138ad64fe8fd1d13d9b153e"},
   "phoenix": {:hex, :phoenix, "1.7.18", "5310c21443514be44ed93c422e15870aef254cf1b3619e4f91538e7529d2b2e4", [:mix], [{:castore, ">= 0.0.0", [hex: :castore, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:phoenix_pubsub, "~> 2.1", [hex: :phoenix_pubsub, repo: "hexpm", optional: false]}, {:phoenix_template, "~> 1.0", [hex: :phoenix_template, repo: "hexpm", optional: false]}, {:phoenix_view, "~> 2.0", [hex: :phoenix_view, repo: "hexpm", optional: true]}, {:plug, "~> 1.14", [hex: :plug, repo: "hexpm", optional: false]}, {:plug_cowboy, "~> 2.7", [hex: :plug_cowboy, repo: "hexpm", optional: true]}, {:plug_crypto, "~> 1.2 or ~> 2.0", [hex: :plug_crypto, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}, {:websock_adapter, "~> 0.5.3", [hex: :websock_adapter, repo: "hexpm", optional: false]}], "hexpm", "1797fcc82108442a66f2c77a643a62980f342bfeb63d6c9a515ab8294870004e"},
   "phoenix_ecto": {:hex, :phoenix_ecto, "4.6.3", "f686701b0499a07f2e3b122d84d52ff8a31f5def386e03706c916f6feddf69ef", [:mix], [{:ecto, "~> 3.5", [hex: :ecto, repo: "hexpm", optional: false]}, {:phoenix_html, "~> 2.14.2 or ~> 3.0 or ~> 4.1", [hex: :phoenix_html, repo: "hexpm", optional: true]}, {:plug, "~> 1.9", [hex: :plug, repo: "hexpm", optional: false]}, {:postgrex, "~> 0.16 or ~> 1.0", [hex: :postgrex, repo: "hexpm", optional: true]}], "hexpm", "909502956916a657a197f94cc1206d9a65247538de8a5e186f7537c895d95764"},
-  "phoenix_html": {:hex, :phoenix_html, "4.1.1", "4c064fd3873d12ebb1388425a8f2a19348cef56e7289e1998e2d2fa758aa982e", [:mix], [], "hexpm", "f2f2df5a72bc9a2f510b21497fd7d2b86d932ec0598f0210fed4114adc546c6f"},
+  "phoenix_html": {:hex, :phoenix_html, "4.2.0", "83a4d351b66f472ebcce242e4ae48af1b781866f00ef0eb34c15030d4e2069ac", [:mix], [], "hexpm", "9713b3f238d07043583a94296cc4bbdceacd3b3a6c74667f4df13971e7866ec8"},
   "phoenix_live_reload": {:hex, :phoenix_live_reload, "1.5.3", "f2161c207fda0e4fb55165f650f7f8db23f02b29e3bff00ff7ef161d6ac1f09d", [:mix], [{:file_system, "~> 0.3 or ~> 1.0", [hex: :file_system, repo: "hexpm", optional: false]}, {:phoenix, "~> 1.4", [hex: :phoenix, repo: "hexpm", optional: false]}], "hexpm", "b4ec9cd73cb01ff1bd1cac92e045d13e7030330b74164297d1aee3907b54803c"},
   "phoenix_live_view": {:hex, :phoenix_live_view, "1.0.1", "5389a30658176c0de816636ce276567478bffd063c082515a6e8368b8fc9a0db", [:mix], [{:floki, "~> 0.36", [hex: :floki, repo: "hexpm", optional: true]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:phoenix, "~> 1.6.15 or ~> 1.7.0", [hex: :phoenix, repo: "hexpm", optional: false]}, {:phoenix_html, "~> 3.3 or ~> 4.0", [hex: :phoenix_html, repo: "hexpm", optional: false]}, {:phoenix_template, "~> 1.0", [hex: :phoenix_template, repo: "hexpm", optional: false]}, {:phoenix_view, "~> 2.0", [hex: :phoenix_view, repo: "hexpm", optional: true]}, {:plug, "~> 1.15", [hex: :plug, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4.2 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "c0f517e6f290f10dbb94343ac22e0109437fb1fa6f0696e7c73967b789c1c285"},
   "phoenix_pubsub": {:hex, :phoenix_pubsub, "2.1.3", "3168d78ba41835aecad272d5e8cd51aa87a7ac9eb836eabc42f6e57538e3731d", [:mix], [], "hexpm", "bba06bc1dcfd8cb086759f0edc94a8ba2bc8896d5331a1e2c2902bf8e36ee502"},