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

@@ -46,10 +46,10 @@
         },
         "attrs": {
             "hashes": [
-                "sha256:31b2eced602aa8423c2aea9c76a724617ed67cf9513173fd3a4f03e3a929c7e6",
-                "sha256:832aa3cde19744e49938b91fea06d69ecb9e649c93ba974535d08ad92164f700"
+                "sha256:149e90d6d8ac20db7a955ad60cf0e6881a3f20d37096140088356da6c716b0b1",
+                "sha256:ef6aaac3ca6cd92904cdd0d83f629a15f18053ec84e6432106f7a4d04ae4f5fb"
             ],
-            "version": "==20.3.0"
+            "version": "==21.2.0"
         },
         "black": {
             "hashes": [
@@ -68,6 +68,9 @@
             "version": "==7.1.2"
         },
         "coverage": {
+            "extras": [
+                "toml"
+            ],
             "hashes": [
                 "sha256:004d1880bed2d97151facef49f08e255a20ceb6f9432df75f4eef018fdd5a78c",
                 "sha256:01d84219b5cdbfc8122223b39a954820929497a1cb1422824bb86b07b74594b6",
@@ -285,11 +288,11 @@
         },
         "pytest-cov": {
             "hashes": [
-                "sha256:359952d9d39b9f822d9d29324483e7ba04a3a17dd7d05aa6beb7ea01e359e5f7",
-                "sha256:bdb9fdb0b85a7cc825269a4c56b48ccaa5c7e365054b6038772c32ddcdc969da"
+                "sha256:8535764137fecce504a49c2b742288e3d34bc09eed298ad65963616cc98fd45e",
+                "sha256:95d4933dcbbacfa377bb60b29801daa30d90c33981ab2a79e9ab4452c165066e"
             ],
             "index": "pypi",
-            "version": "==2.11.1"
+            "version": "==2.12.0"
         },
         "regex": {
             "hashes": [
@@ -339,10 +342,10 @@
         },
         "six": {
             "hashes": [
-                "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259",
-                "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"
+                "sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926",
+                "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"
             ],
-            "version": "==1.15.0"
+            "version": "==1.16.0"
         },
         "toml": {
             "hashes": [
@@ -388,11 +391,11 @@
         },
         "typing-extensions": {
             "hashes": [
-                "sha256:7cb407020f00f7bfc3cb3e7881628838e69d8f3fcab2f64742a5e76b2f841918",
-                "sha256:99d4073b617d30288f569d3f13d2bd7548c3a7e4c8de87db09a9d29bb3a4a60c",
-                "sha256:dafc7639cde7f1b6e1acc0f457842a83e722ccca8eef5270af2d74792619a89f"
+                "sha256:0ac0f89795dd19de6b97debb0c6af1c70987fd80a2d62d1958f7e56fcc31b497",
+                "sha256:50b6f157849174217d0656f99dc82fe932884fb250826c18350e159ec6cdf342",
+                "sha256:779383f6086d90c99ae41cf0ff39aac8a7937a9283ce0a414e5dd782f4c94a84"
             ],
-            "version": "==3.7.4.3"
+            "version": "==3.10.0.0"
         },
         "wrapt": {
             "hashes": [