Bump flake8 from 7.2.0 to 7.3.0 (#1520)

Bumps [flake8](https://github.com/pycqa/flake8) from 7.2.0 to 7.3.0.
- [Commits](PyCQA/flake8@7.2.0...7.3.0)

---
updated-dependencies:
- dependency-name: flake8
  dependency-version: 7.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

demos/blog/requirements.txt

@@ -11,4 +11,4 @@ SQLalchemy==2.0.41
 pytest==8.3.5
 pytest-aiohttp==1.1.0
 pytest-asyncio==0.26.0
-flake8==7.2.0
+flake8==7.3.0

demos/graphql-demo/requirements-dev.txt

@@ -11,7 +11,7 @@ psycopg2-binary==2.9.10
 redis==6.2.0
 
 mypy==1.16.1
-flake8==7.2.0
+flake8==7.3.0
 pytest==8.3.5
 pytest-cov==6.2.1
 sqlalchemy==2.0.41

demos/moderator/requirements-dev.txt

@@ -7,7 +7,7 @@ scikit-learn==1.7.0
 scipy==1.16.0
 
 
-flake8==7.2.0
+flake8==7.3.0
 flake8-bugbear==24.12.12
 flake8-quotes==3.4.0
 ipdb==0.13.13

demos/polls/requirements-dev.txt

@@ -7,4 +7,4 @@ SQLalchemy==2.0.41
 # For testing
 pytest==8.3.5
 pytest-aiohttp==1.1.0
-flake8==7.2.0
+flake8==7.3.0

requirements-dev.txt

@@ -10,7 +10,7 @@
 -r demos/shortify/requirements.txt
 
 # lint
-flake8==7.2.0
+flake8==7.3.0
 flake8-bugbear==24.12.12
 flake8-quotes==3.4.0