Bump ex_abi from 0.8.2 to 0.8.3 (#199)

Bumps [ex_abi](https://github.com/poanetwork/ex_abi) from 0.8.2 to 0.8.3.
- [Release notes](https://github.com/poanetwork/ex_abi/releases)
- [Changelog](https://github.com/poanetwork/ex_abi/blob/master/CHANGELOG.md)
- [Commits](poanetwork/ex_abi@0.8.2...0.8.3)

---
updated-dependencies:
- dependency-name: ex_abi
  dependency-type: direct:production
  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>

Author: dependabot[bot]

mix.lock

@@ -6,7 +6,7 @@
   "earmark_parser": {:hex, :earmark_parser, "1.4.44", "f20830dd6b5c77afe2b063777ddbbff09f9759396500cdbe7523efd58d7a339c", [:mix], [], "hexpm", "4778ac752b4701a5599215f7030989c989ffdc4f6df457c5f36938cc2d2a2750"},
   "erlex": {:hex, :erlex, "0.2.7", "810e8725f96ab74d17aac676e748627a07bc87eb950d2b83acd29dc047a30595", [:mix], [], "hexpm", "3ed95f79d1a844c3f6bf0cea61e0d5612a42ce56da9c03f01df538685365efb0"},
   "ethereumex": {:hex, :ethereumex, "0.12.0", "a596f64d18ae829e5c7d6c2053c16ad2e2de22d0ac5f2e0aa466a330ee3fdd3b", [:make, :mix], [{:finch, "~> 0.16", [hex: :finch, repo: "hexpm", optional: false]}, {:jason, "~> 1.4", [hex: :jason, repo: "hexpm", optional: true]}, {:poolboy, "~> 1.5", [hex: :poolboy, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}, {:websockex, "~> 0.4.3", [hex: :websockex, repo: "hexpm", optional: false]}], "hexpm", "326c1eb3587ad74f66ede980914e666ad174a8a6250c8dc6d81ea94533a1b47b"},
-  "ex_abi": {:hex, :ex_abi, "0.8.2", "66812c921b236c68bb3d8bcfcb759c5715322064ad150d715f18f2f65e0e0648", [:mix], [{:ex_keccak, "~> 0.7.6", [hex: :ex_keccak, repo: "hexpm", optional: true]}, {:jason, "~> 1.4", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "db785ad43c24d4d7015d3070611eb3e2bd88fa96b614cab10cb42401c94e1e74"},
+  "ex_abi": {:hex, :ex_abi, "0.8.3", "e01cbafd81008db9e8bc8ac0a4ae5bf08e86a2d82afdca242550269445b80e04", [:mix], [{:ex_keccak, "~> 0.7.6", [hex: :ex_keccak, repo: "hexpm", optional: true]}], "hexpm", "6349a10331c54a1e09865811f705913fa181bc75b4c9a2d326fd96e21bf60cd4"},
   "ex_doc": {:hex, :ex_doc, "0.37.3", "f7816881a443cd77872b7d6118e8a55f547f49903aef8747dbcb345a75b462f9", [:mix], [{:earmark_parser, "~> 1.4.42", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_c, ">= 0.1.0", [hex: :makeup_c, repo: "hexpm", optional: true]}, {:makeup_elixir, "~> 0.14 or ~> 1.0", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1 or ~> 1.0", [hex: :makeup_erlang, repo: "hexpm", optional: false]}, {:makeup_html, ">= 0.1.0", [hex: :makeup_html, repo: "hexpm", optional: true]}], "hexpm", "e6aebca7156e7c29b5da4daa17f6361205b2ae5f26e5c7d8ca0d3f7e18972233"},
   "ex_keccak": {:hex, :ex_keccak, "0.7.6", "110c3ed76b55265975d9ae6628205b8a026f11fe081f3073e00c29aab2e91473", [:mix], [{:rustler, ">= 0.0.0", [hex: :rustler, repo: "hexpm", optional: true]}, {:rustler_precompiled, "~> 0.8", [hex: :rustler_precompiled, repo: "hexpm", optional: false]}], "hexpm", "9d1568424eb7b995e480d1b7f0c1e914226ee625496600abb922bba6f5cdc5e4"},
   "ex_rlp": {:hex, :ex_rlp, "0.6.0", "985391d2356a7cb8712a4a9a2deb93f19f2fbca0323f5c1203fcaf64d077e31e", [:mix], [], "hexpm", "7135db93b861d9e76821039b60b00a6a22d2c4e751bf8c444bffe7a042f1abaf"},