Merge pull request #297 from staticdev/dependabot/pip/xdoctest-0.15.4

Bump xdoctest from 0.15.3 to 0.15.4

Author: Thiago C. D'Ávila

poetry.lock

@@ -36,7 +36,7 @@ coverage = {extras = ["toml"], version = "^5.4"}
 typeguard = "^2.10.0"
 pre-commit = "^2.10.0"
 pygments = "^2.7.3"
-xdoctest = "^0.15.3"
+xdoctest = "^0.15.4"
 sphinx = "^3.4.2"
 sphinx-autobuild = "^2020.9.1"
 darglint = "^1.5.8"