Update package version to 2.4.0

pkg.info

@@ -1,9 +1,11 @@
 name: lxqt-themes
 description: Themes, graphics and icons for LXQt
-version: 2.3.0
+version: 2.4.0
 revision: 1
 url: https://github.com/lxqt/lxqt-themes
 license: LGPL2.1-or-later
+maintainers:
+  - [email protected]
 architecture: any
 output_architecture: any
 type: source
@@ -15,4 +17,4 @@ downloads:
   - url: https://github.com/lxqt/lxqt-themes/archive/refs/tags/${BPM_PKG_VERSION}.tar.gz
     extract_to: ${BPM_SOURCE}
     extract_strip_components: 1
-    checksum: e30dd9e21267c3b0b4e129933a5d2adf48539e4b7ab23a454c3f02ea37860950
+    checksum: d9a3a1e593f3e4c9148ed2bb2ec5ad520b8d0303de13fff5288aba0b8b33c481