Log Message:
x11/alacritty: update to 0.8.0

Packaging:
-Minimum Rust version has been bumped to 1.45.0

Added:
-IME composition preview not appearing on Windows
-Synchronized terminal updates using DCS = 1 s ST/DCS = 2 s ST
-Regex terminal hints (see features.md)
-macOS keybinding (cmd+alt+H) hiding all windows other than Alacritty
-Support for magnet URLs

Changed:
-The vi mode cursor is now created in the top-left if the terminal cursor is
invisible
-Focused search match will use cell instead of match colors for
CellForeground/CellBackground
-URL highlighting has moved from mouse.url to the hints config section

Fixed:
-Alacritty failing to start on X11 with invalid DPI reported by XRandr
-Text selected after search without any match
-Incorrect vi cursor position after leaving search
-Clicking on URLs on Windows incorrectly opens File Explorer
-Incorrect underline cursor thickness on wide cell
-Viewport moving around when resizing while scrolled into history
-Block cursor not expanding across fullwidth characters when on the right
side of it
-Overwriting fullwidth characters only clearing one of the involved cells