build(deps-dev): bump pytest-cov from 2.12.0 to 2.12.1

Bumps [pytest-cov](https://github.com/pytest-dev/pytest-cov) from 2.12.0 to 2.12.1.
- [Release notes](https://github.com/pytest-dev/pytest-cov/releases)
- [Changelog](https://github.com/pytest-dev/pytest-cov/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/pytest-dev/pytest-cov/compare/v2.12.0...v2.12.1)

---
updated-dependencies:
- dependency-name: pytest-cov
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Pipfile.lock

@@ -351,11 +351,11 @@
         },
         "pytest-cov": {
             "hashes": [
-                "sha256:8535764137fecce504a49c2b742288e3d34bc09eed298ad65963616cc98fd45e",
+                "sha256:261bb9e47e65bd099c89c3edf92972865210c36813f80ede5277dceb77a4a62a",
-                "sha256:95d4933dcbbacfa377bb60b29801daa30d90c33981ab2a79e9ab4452c165066e"
+                "sha256:261ceeb8c227b726249b376b8526b600f38667ee314f910353fa318caa01f4d7"
             ],
             "index": "pypi",
-            "version": "==2.12.0"
+            "version": "==2.12.1"
         },
         "regex": {
             "hashes": [