chore(deps): bump absinthe from 1.6.3 to 1.6.4

Bumps [absinthe](https://github.com/absinthe-graphql/absinthe) from 1.6.3 to 1.6.4.
- [Release notes](https://github.com/absinthe-graphql/absinthe/releases)
- [Changelog](https://github.com/absinthe-graphql/absinthe/blob/master/CHANGELOG.md)
- [Commits](absinthe-graphql/absinthe@v1.6.3...v1.6.4)

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

Author: dependabot-preview[bot]

mix.lock

@@ -1,5 +1,5 @@
 %{
-  "absinthe": {:hex, :absinthe, "1.6.3", "f8c7a581fa2382bde1adadd405f5caf6597623b48d160367f759d0d6e6292f84", [:mix], [{:dataloader, "~> 1.0.0", [hex: :dataloader, repo: "hexpm", optional: true]}, {:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}, {:nimble_parsec, "~> 0.5 or ~> 1.0", [hex: :nimble_parsec, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "4a11192165fb3b7566ffdd86eccd12f0a87158b0b18c00e0400899e8df0225ea"},
+  "absinthe": {:hex, :absinthe, "1.6.4", "d2958908b72ce146698de8ccbc03622630471eb0e354e06823aaef183e5067bd", [:mix], [{:dataloader, "~> 1.0.0", [hex: :dataloader, repo: "hexpm", optional: true]}, {:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}, {:nimble_parsec, "~> 0.5 or ~> 1.0", [hex: :nimble_parsec, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "6e9c1cf36d86c704cb9a9c78db62d1c2676b03e0f61a28a23fc42749e8cd41ae"},
   "absinthe_ecto": {:hex, :absinthe_ecto, "0.1.3", "420b68129e79fe4571a4838904ba03e282330d335da47729ad52ffd7b8c5fcb1", [:mix], [{:absinthe, "~> 1.3.0 or ~> 1.4.0", [hex: :absinthe, repo: "hexpm", optional: false]}, {:ecto, ">= 0.0.0", [hex: :ecto, repo: "hexpm", optional: false]}], "hexpm", "355b9db34abfab96ae1e025434b66e11002babcf4fe6b7144d26ff7548985f52"},
   "absinthe_plug": {:hex, :absinthe_plug, "1.5.7", "c9954c5eff0a11be185f73987533d38d6aa44ca6bd5253de32de099f82996ce5", [:mix], [{:absinthe, "~> 1.5", [hex: :absinthe, repo: "hexpm", optional: false]}, {:plug, "~> 1.4", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm", "2e7d766c5b3ec57aed06db0d420674bc0ff6998c55c85f5fb9bb0d3dcf7ad20d"},
   "accessible": {:hex, :accessible, "0.3.0", "932f6ade6ea839212fea1735ab4ffdc39a3843a622f2ea5d28f0ab41c14b4435", [:mix], [], "hexpm", "13a11b0611ab82f7b9098a88465b5674f729c02bd613216243c123c65f90f296"},