Bump ex_doc from 0.30.3 to 0.30.4 (#2012)

Bumps [ex_doc](https://github.com/elixir-lang/ex_doc) from 0.30.3 to 0.30.4.
- [Changelog](https://github.com/elixir-lang/ex_doc/blob/main/CHANGELOG.md)
- [Commits](elixir-lang/ex_doc@v0.30.3...v0.30.4)

---
updated-dependencies:
- dependency-name: ex_doc
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

mix.lock

@@ -43,7 +43,7 @@
   "ex_cldr_numbers": {:hex, :ex_cldr_numbers, "2.31.3", "6ec8b18c395c0e8788d46da806f8f2abcbe4b0d809226d2a91363e9ccd85f2f5", [:mix], [{:decimal, "~> 1.6 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:digital_token, "~> 0.3 or ~> 1.0", [hex: :digital_token, repo: "hexpm", optional: false]}, {:ex_cldr, "~> 2.37", [hex: :ex_cldr, repo: "hexpm", optional: false]}, {:ex_cldr_currencies, ">= 2.14.2", [hex: :ex_cldr_currencies, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}], "hexpm", "b519de08ecc4a6402038f3aa75e8654f78ebd6fa714b7e585531504e648588fd"},
   "ex_cldr_plugs": {:hex, :ex_cldr_plugs, "1.2.1", "fa8339e0be9be6296edfcacafc1ecddda80c88b33ef689c77f757e48b7e4b935", [:mix], [{:ex_cldr, "~> 2.29", [hex: :ex_cldr, repo: "hexpm", optional: false]}, {:gettext, "~> 0.19", [hex: :gettext, repo: "hexpm", optional: true]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:plug, "~> 1.9", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm", "c99fa57e265e1746262d09f2f6612164c9706b612a546854f75122c7c14c72c9"},
   "ex_cldr_units": {:hex, :ex_cldr_units, "3.16.2", "dbad303fba819981c578234e2aaf19d72efca16ea8b1c6ee46b26232cb45e232", [:mix], [{:cldr_utils, "~> 2.24", [hex: :cldr_utils, repo: "hexpm", optional: false]}, {:decimal, "~> 1.6 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:ex_cldr_lists, "~> 2.10", [hex: :ex_cldr_lists, repo: "hexpm", optional: false]}, {:ex_cldr_numbers, "~> 2.31", [hex: :ex_cldr_numbers, repo: "hexpm", optional: false]}, {:ex_doc, "~> 0.18", [hex: :ex_doc, repo: "hexpm", optional: true]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}], "hexpm", "851095319fb3205c1549619da742cd53a2804c1d9c204cf84014021e2a6ea7e5"},
-  "ex_doc": {:hex, :ex_doc, "0.30.3", "bfca4d340e3b95f2eb26e72e4890da83e2b3a5c5b0e52607333bf5017284b063", [:mix], [{:earmark_parser, "~> 1.4.31", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1", [hex: :makeup_erlang, repo: "hexpm", optional: false]}], "hexpm", "fbc8702046c1d25edf79de376297e608ac78cdc3a29f075484773ad1718918b6"},
+  "ex_doc": {:hex, :ex_doc, "0.30.4", "e8395c8e3c007321abb30a334f9f7c0858d80949af298302daf77553468c0c39", [:mix], [{:earmark_parser, "~> 1.4.31", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1", [hex: :makeup_erlang, repo: "hexpm", optional: false]}], "hexpm", "9a19f0c50ffaa02435668f5242f2b2a61d46b541ebf326884505dfd3dd7af5e4"},
   "ex_phone_number": {:hex, :ex_phone_number, "0.4.2", "11ca906c9ab9b909f7b7927a57a9426ecd81cb1a1b95638dd4d35da01b41cb5d", [:mix], [{:sweet_xml, "~> 0.7", [hex: :sweet_xml, repo: "hexpm", optional: false]}], "hexpm", "db5871da29cb7a720532a5b0248f71d0d251b3ed8c101a016b2661911c5c8e98"},
   "excoveralls": {:hex, :excoveralls, "0.16.1", "0bd42ed05c7d2f4d180331a20113ec537be509da31fed5c8f7047ce59ee5a7c5", [:mix], [{:hackney, "~> 1.16", [hex: :hackney, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "dae763468e2008cf7075a64cb1249c97cb4bc71e236c5c2b5e5cdf1cfa2bf138"},
   "expo": {:hex, :expo, "0.4.1", "1c61d18a5df197dfda38861673d392e642649a9cef7694d2f97a587b2cfb319b", [:mix], [], "hexpm", "2ff7ba7a798c8c543c12550fa0e2cbc81b95d4974c65855d8d15ba7b37a1ce47"},