Bump yaml_elixir from 2.7.0 to 2.8.0

Bumps [yaml_elixir](https://github.com/KamilLelonek/yaml-elixir) from 2.7.0 to 2.8.0.
- [Release notes](https://github.com/KamilLelonek/yaml-elixir/releases)
- [Commits](KamilLelonek/yaml-elixir@v2.7.0...v2.8.0)

---
updated-dependencies:
- dependency-name: yaml_elixir
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

mix.lock

@@ -22,5 +22,5 @@
   "ssl_verify_fun": {:hex, :ssl_verify_fun, "1.1.6", "cf344f5692c82d2cd7554f5ec8fd961548d4fd09e7d22f5b62482e5aeaebd4b0", [:make, :mix, :rebar3], [], "hexpm", "bdb0d2471f453c88ff3908e7686f86f9be327d065cc1ec16fa4540197ea04680"},
   "unicode_util_compat": {:hex, :unicode_util_compat, "0.7.0", "bc84380c9ab48177092f43ac89e4dfa2c6d62b40b8bd132b1059ecc7232f9a78", [:rebar3], [], "hexpm", "25eee6d67df61960cf6a794239566599b09e17e668d3700247bc498638152521"},
   "yamerl": {:hex, :yamerl, "0.8.1", "07da13ffa1d8e13948943789665c62ccd679dfa7b324a4a2ed3149df17f453a4", [:rebar3], [], "hexpm", "96cb30f9d64344fed0ef8a92e9f16f207de6c04dfff4f366752ca79f5bceb23f"},
-  "yaml_elixir": {:hex, :yaml_elixir, "2.7.0", "6f731d622a3b28769e26e634f82aa171d1d01cae0e8820ce9e93e559c83c23c8", [:mix], [{:yamerl, "~> 0.8", [hex: :yamerl, repo: "hexpm", optional: false]}], "hexpm", "f2eb39e0fb23625777f74e0c821f42f033dc4eaa5402c34beaa665944d85f3ea"},
+  "yaml_elixir": {:hex, :yaml_elixir, "2.8.0", "c7ff0034daf57279c2ce902788ce6fdb2445532eb4317e8df4b044209fae6832", [:mix], [{:yamerl, "~> 0.8", [hex: :yamerl, repo: "hexpm", optional: false]}], "hexpm", "4b674bd881e373d1ac6a790c64b2ecb69d1fd612c2af3b22de1619c15473830b"},
 }