[BUG] Update file_picker to ^8.0.2

[gerken-tss]

Describe the bug

Because quill_html_editor 2.2.8 depends on file_picker ^6.1.1 and no versions of quill_html_editor match >2.2.8 <3.0.0, quill_html_editor ^2.2.8 requires file_picker ^6.1.1.
So, because my_app depends on both file_picker ^8.0.2 and quill_html_editor ^2.2.8, version solving failed.

To Reproduce
Steps to reproduce the behavior:

1. Add quill_html_editor ^2.2.8 as a dependency to your project
2. Add file_picker ^8.0.2 as a dependency to your project

Expected behavior
Everything works as expected

[gerken-tss]

There is already a PR for this btw: #192

[oba4me]

Because quill_html_editor 2.2.8 depends on file_picker ^6.1.1 and no versions of quill_html_editor match >2.2.8 <3.0.0, quill_html_editor ^2.2.8 requires
file_picker ^6.1.1.
So, because project depends on both file_picker ^8.0.2 and quill_html_editor ^2.2.8, version solving failed.