Update package version to 2.4.0

pkg.info

@@ -1,9 +1,11 @@
 name: lxqt-about
 description: Dialogue window providing information about LXQt and the system it's running on
-version: 2.3.0
+version: 2.4.0
 revision: 1
 url: https://github.com/lxqt/lxqt-about
 license: LGPL2.1-or-later
+maintainers:
+  - [email protected]
 architecture: any
 type: source
 depends:
@@ -15,4 +17,4 @@ downloads:
   - url: https://github.com/lxqt/lxqt-about/archive/refs/tags/${BPM_PKG_VERSION}.tar.gz
     extract_to: ${BPM_SOURCE}
     extract_strip_components: 1
-    checksum: f2adecb400e3bff0095c0677bfa517a79e094107d802f0a560d4719ac786734a
+    checksum: fc5dbf055ecf7732191466181d8689f7006032be8eb71fcfffdc75a63bd09702