Update dependency flake8 to v7.5.0 - #2945

Changed pages include:

• index.html - view
• exceptions/index.html - view
• events/index.html - view
• en/index.html - view
• ecosystem/index.html - view
• downloads/index.html - view
• documentation/index.html - view
• blog/index.html - view
• about/index.html - view
• 404.html - view

There are more changes not included in the list