cargo_audit: Temporarily ignore RUSTSEC-2024-0384.

We depend on `instant`, which is unmaintained, via `notify`.

`notify` switched over to [`web-time`], but hasn't relased the change
yet, so we need to ignore the advisory for now.

[`web-time`]: notify-rs/notify#652

maint/cargo_audit

@@ -30,6 +30,14 @@ IGNORE=(
     # Ignoring while we are waiting for upstream to switch to the suggested
     # alternative: https://github.com/CensoredUsername/dynasm-rs/pull/100
     --ignore RUSTSEC-2024-0370
+    # instant is unmaintained.
+    #
+    # This was fixed upstream in
+    # https://github.com/notify-rs/notify/pull/652
+    # but we're waiting for notify to cut a release.
+    #
+    # Ignoring while we are waiting for the notify version bump
+    --ignore RUSTSEC-2024-0384
 )
 
 ${CARGO:-cargo} audit -D warnings "${IGNORE[@]}"