chore(deps): update dependency pytest-cov to ==2.12.*

Author: renovate[bot]

pyproject.toml

@@ -75,7 +75,7 @@ doc = [
 test = [
     "pytest==6.2.5",
     "pytest-bdd==4.0.*",
-    "pytest-cov==2.11.*",
+    "pytest-cov==2.12.*",
     "pytest-xdist==2.2.*",
     "pytest-mccabe>=2.0.0,<3.0.0",
 ]