This pull request updates the version numbers for several packages and makes small improvements to the UI and code formatting in the rustmail_panel project. The most important changes are grouped below:

Version updates:

• Bumped the version numbers of rustmail, rustmail_panel, and rustmail_types to 1.0.8 in their respective Cargo.toml files.

UI improvements:

• Added the font-bold class to the main headings in the configuration and tickets list pages to improve visual emphasis.

Code formatting and cleanup:

• Reformatted long lines in the tickets list filtering and navigation logic for better readability in ticket.rs.
• Cleaned up imports by moving use web_sys::UrlSearchParams; to the appropriate location in ticket.rs.

Dependency cleanup:

• Removed unused dependencies base64 and prefixed-api-key from rustmail/Cargo.toml.