core: Bump flower from 1.2.0 to 2.0.0 (#6002)

Bumps [flower](https://github.com/mher/flower) from 1.2.0 to 2.0.0.
- [Commits](https://github.com/mher/flower/compare/v1.2.0...v2.0.0)

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

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

poetry.lock

@@ -1328,13 +1328,13 @@ requests = "*"
 
 [[package]]
 name = "flower"
-version = "1.2.0"
+version = "2.0.0"
 description = "Celery Flower"
 optional = false
-python-versions = "*"
+python-versions = ">=3.7"
 files = [
-    {file = "flower-1.2.0-py2.py3-none-any.whl", hash = "sha256:ae2977cf7343c526cf44def8c7e7173db8dedb8249b91ba4b88cfd18e7a2d486"},
-    {file = "flower-1.2.0.tar.gz", hash = "sha256:46493c7e8d9ca2167e8a46eb97ae8d280997cb40a81993230124d74f0fe40bac"},
+    {file = "flower-2.0.0-py2.py3-none-any.whl", hash = "sha256:571f9ed1c57a622e862de35eceb8a4244f023fbcfb7175f53e45ebe679f46d90"},
+    {file = "flower-2.0.0.tar.gz", hash = "sha256:5657785d728a54914256c34fd0551fe2d7152aab08062ebc645bf86b97b8aec5"},
 ]
 
 [package.dependencies]