core: bump gunicorn from 20.1.0 to 21.0.1 (#6276)

Bumps [gunicorn](https://github.com/benoitc/gunicorn) from 20.1.0 to 21.0.1.
- [Release notes](https://github.com/benoitc/gunicorn/releases)
- [Commits](https://github.com/benoitc/gunicorn/compare/20.1.0...21.0.1)

---
updated-dependencies:
- dependency-name: gunicorn
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

poetry.lock

@@ -1615,17 +1615,17 @@ files = [
 
 [[package]]
 name = "gunicorn"
-version = "20.1.0"
+version = "21.0.1"
 description = "WSGI HTTP Server for UNIX"
 optional = false
 python-versions = ">=3.5"
 files = [
-    {file = "gunicorn-20.1.0-py3-none-any.whl", hash = "sha256:9dcc4547dbb1cb284accfb15ab5667a0e5d1881cc443e0677b4882a4067a807e"},
-    {file = "gunicorn-20.1.0.tar.gz", hash = "sha256:e0a968b5ba15f8a328fdfd7ab1fcb5af4470c28aaf7e55df02a99bc13138e6e8"},
+    {file = "gunicorn-21.0.1-py3-none-any.whl", hash = "sha256:949880781d74f55eda34eb1a552f9c83db6edb42f2bd4f87c09e2a66b13922ea"},
+    {file = "gunicorn-21.0.1.tar.gz", hash = "sha256:b18fa5a9b22becdffc29d2586b914225a69624bb3e3a064cb04decfb2f34bfe8"},
 ]
 
 [package.dependencies]
-setuptools = ">=3.0"
+packaging = "*"
 
 [package.extras]
 eventlet = ["eventlet (>=0.24.1)"]