build(deps-dev): bump pytest-cov from 2.11.1 to 2.12.0

Bumps [pytest-cov](https://github.com/pytest-dev/pytest-cov) from 2.11.1 to 2.12.0.
- [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/v2.11.1...v2.12.0)

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

Pipfile.lock

@@ -80,6 +80,9 @@
             "version": "==7.1.2"
         },
         "coverage": {
+            "extras": [
+                "toml"
+            ],
             "hashes": [
                 "sha256:004d1880bed2d97151facef49f08e255a20ceb6f9432df75f4eef018fdd5a78c",
                 "sha256:01d84219b5cdbfc8122223b39a954820929497a1cb1422824bb86b07b74594b6",
@@ -297,11 +300,11 @@
         },
         "pytest-cov": {
             "hashes": [
-                "sha256:359952d9d39b9f822d9d29324483e7ba04a3a17dd7d05aa6beb7ea01e359e5f7",
+                "sha256:8535764137fecce504a49c2b742288e3d34bc09eed298ad65963616cc98fd45e",
-                "sha256:bdb9fdb0b85a7cc825269a4c56b48ccaa5c7e365054b6038772c32ddcdc969da"
+                "sha256:95d4933dcbbacfa377bb60b29801daa30d90c33981ab2a79e9ab4452c165066e"
             ],
             "index": "pypi",
-            "version": "==2.11.1"
+            "version": "==2.12.0"
         },
         "regex": {
             "hashes": [