Party popper emoji added.

internal/emoji/catalog.go

@@ -468,6 +468,7 @@ var categories = []struct {
 		{ID: "🧙‍♀️", Label: "Witch"},
 		{ID: "🧨", Label: "Firecracker"},
 		{ID: "🎊", Label: "Confetti ball"},
+		{ID: "🎉", Label: "Party popper"},
 		{ID: "🎈", Label: "Balloon"},
 		{ID: "🎀", Label: "Ribbon"},
 		{ID: "🪄", Label: "Magic wand"},

internal/emoji/catalog_test.go

@@ -107,11 +107,11 @@ func TestExpandedCatalogCategoriesAndUniqueEmojiIDs(t *testing.T) {
 			t.Fatal("missing category", id)
 		}
 	}
-	if len(emojiIDs) != 500 {
+	if len(emojiIDs) != 501 {
 		t.Fatal("expanded catalog has the wrong size", len(emojiIDs))
 	}
-	if !emojiIDs["🐐"] {
-		t.Fatal("goat emoji missing")
+	if !emojiIDs["🐐"] || !emojiIDs["🎉"] {
+		t.Fatal("goat or party popper emoji missing")
 	}
 }