chore(deps-dev): bump black from 21.8b0 to 21.9b0

Bumps [black](https://github.com/psf/black) from 21.8b0 to 21.9b0.
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](https://github.com/psf/black/commits)

---
updated-dependencies:
- dependency-name: black
  dependency-type: direct:development
...

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

Pipfile.lock

@@ -156,11 +156,11 @@
         },
         "black": {
             "hashes": [
-                "sha256:2a0f9a8c2b2a60dbcf1ccb058842fb22bdbbcb2f32c6cc02d9578f90b92ce8b7",
-                "sha256:570608d28aa3af1792b98c4a337dbac6367877b47b12b88ab42095cfc1a627c2"
+                "sha256:380f1b5da05e5a1429225676655dddb96f5ae8c75bdf91e53d798871b902a115",
+                "sha256:7de4cfc7eb6b710de325712d40125689101d21d25283eed7e9998722cf10eb91"
             ],
             "index": "pypi",
-            "version": "==21.8b0"
+            "version": "==21.9b0"
         },
         "click": {
             "hashes": [
@@ -186,11 +186,11 @@
         },
         "platformdirs": {
             "hashes": [
-                "sha256:4666d822218db6a262bdfdc9c39d21f23b4cfdb08af331a81e92751daf6c866c",
-                "sha256:632daad3ab546bd8e6af0537d09805cec458dce201bccfe23012df73332e181e"
+                "sha256:15b056538719b1c94bdaccb29e5f81879c7f7f0f4a153f46086d155dffcd4f0f",
+                "sha256:8003ac87717ae2c7ee1ea5a84a1a61e87f3fbd16eb5aadba194ea30a9019f648"
             ],
             "markers": "python_version >= '3.6'",
-            "version": "==2.2.0"
+            "version": "==2.3.0"
         },
         "pytz": {
             "hashes": [
@@ -255,11 +255,11 @@
         },
         "typing-extensions": {
             "hashes": [
-                "sha256:045dd532231acfa03628df5e0c66dba64e2cc8fc8b844538d4ad6d5dd6cb82dc",
-                "sha256:83af6730a045fda60f46510f7f1f094776d90321caa4d97d20ef38871bef4bd3",
-                "sha256:8bbffbd37fbeb9747a0241fdfde5ae99d4531ad1d1a41ccaea62100e15a5814c"
+                "sha256:49f75d16ff11f1cd258e1b988ccff82a3ca5570217d7ad8c5f48205dd99a677e",
+                "sha256:d8226d10bc02a29bcc81df19a26e56a9647f8b0a6d4a83924139f4a8b01f17b7",
+                "sha256:f1d25edafde516b146ecd0613dabcc61409817af4766fbbcfb8d1ad4ec441a34"
             ],
-            "version": "==3.10.0.1"
+            "version": "==3.10.0.2"
         }
     }
 }