downrev notify-rust dependency

SOmething on the CI doesn't like it and it looks like a problem
with that alpha version, so let's go back to their stable rev.

Cargo.toml

@@ -60,7 +60,7 @@ daemonize = "0.4"
 
 [target.'cfg(not(windows))'.dependencies]
 # show a notification
-notify-rust = "4.0.0-alpha.2"
+notify-rust = "3"
 
 # on linux, font-loader pulls in servo-font* crates which conflict with
 # our newer font related deps, so we avoid it on linux

src/config/mod.rs

@@ -159,7 +159,7 @@ impl ConfigInner {
                         .summary("Wezterm Configuration")
                         .body(&format!("{}", err))
                         // Stay on the screen until dismissed
-                        .hint(notify_rust::Hint::Resident(true))
+                        .hint(notify_rust::NotificationHint::Resident(true))
                         // timeout isn't respected on macos
                         .timeout(0)
                         .show()