uucore: add alacritty to the list of terminals that support colors

Any value of TERM with glob pattern `alacritty*` will be matched.

Fixes #6722

src/uucore/src/lib/features/colors.rs

@@ -13,6 +13,7 @@
 /// restrict following config to systems with matching environment variables.
 pub static TERMS: &[&str] = &[
     "Eterm",
+    "alacritty*",
     "ansi",
     "*color*",
     "con[0-9]*x[0-9]*",