chore(deps-dev): bump pylint from 2.7.2 to 2.7.4

Bumps [pylint](https://github.com/PyCQA/pylint) from 2.7.2 to 2.7.4.
- [Release notes](https://github.com/PyCQA/pylint/releases)
- [Changelog](https://github.com/PyCQA/pylint/blob/master/ChangeLog)
- [Commits](https://github.com/PyCQA/pylint/compare/pylint-2.7.2...pylint-2.7.4)

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

Pipfile.lock

@@ -289,11 +289,11 @@
         },
         "pylint": {
             "hashes": [
-                "sha256:0e21d3b80b96740909d77206d741aa3ce0b06b41be375d92e1f3244a274c1f8a",
-                "sha256:d09b0b07ba06bcdff463958f53f23df25e740ecd81895f7d2699ec04bbd8dc3b"
+                "sha256:209d712ec870a0182df034ae19f347e725c1e615b2269519ab58a35b3fcbbe7a",
+                "sha256:bd38914c7731cdc518634a8d3c5585951302b6e2b6de60fbb3f7a0220e21eeee"
             ],
             "index": "pypi",
-            "version": "==2.7.2"
+            "version": "==2.7.4"
         },
         "pylintfileheader": {
             "hashes": [
@@ -329,7 +329,6 @@
                 "sha256:2f4da4594db7e1e110a944bb1b551fdf4e6c136ad42e4234131391e21eb5b0df",
                 "sha256:e7b021f7241115872f92f43c6508082facffbd1c048e3c6e2bb9c2a157e28937"
             ],
-            "index": "pypi",
             "version": "==1.26.4"
         },
         "wrapt": {