fix(version): actually bump to 4.4.9 (449)

The previous commit message claimed the bump but the edit never
landed (script aborted on a syntax error before touching the toml);
versionName stayed 4.4.8/448. Fix the version now - the v4.4.9 tag
must carry versionName 4.4.9.

gradle/libs.versions.toml

@@ -1,8 +1,8 @@
 [versions]
 #noinspection UnusedVersionCatalogEntry
-appVersionCode = "448"
+appVersionCode = "449"
 #noinspection UnusedVersionCatalogEntry
-appVersionName = "4.4.8"
+appVersionName = "4.4.9"
 #noinspection UnusedVersionCatalogEntry
 compileSdk = "37"
 #noinspection UnusedVersionCatalogEntry