Use debian/watch version 5 (taken from Debian's packages)

debian/copyright

@@ -44,13 +44,13 @@ License: GPL-2.0+
 Files: debian/*
 Copyright: 2015      Andrew Lee <ajqlee@debian.org>
            2015      Shih-Yuan Lee (FourDollars) <fourdollars@gmail.com>
-           2014-2016 ChangZhuo Chen <czchen@gmail.com>
            2016      Yuan CHAO <yuanchao@gmail.com>
            2014-2019 Alf Gaida <agaida@siduction.org>
            2021      apt-ghetto <apt-ghetto@protonmail.com>
            2021-2022 Rik Mills <rikmills@kde.org>
            2019-2025 Simon Quigley <tsimonq2@ubuntu.com>
            2023-2025 Aaron Rainbolt <arraybolt3@gmail.com>
+           2014-2025 ChangZhuo Chen <czchen@gmail.com>
 License: GPL-2.0+
 
 License: GPL-2.0

debian/watch

@@ -1,5 +1,6 @@
-version=4
+Version: 5
-opts="searchmode=plain, \
+Template: GitHub
-pgpsigurlmangle=s/$/.asc/, \
+Owner: lxqt
-uversionmangle=s/(\d+\.\d+\.\d+).*/$1/" \
+Project: @PACKAGE@
-  https://api.github.com/repos/lxqt/@PACKAGE@/releases https:\/\/github.com\/lxqt\/@PACKAGE@\/releases\/download\/@ANY_VERSION@\/@PACKAGE@-@ANY_VERSION@.tar.xz
+Download-Url-Mangle: s%https://api.github.com/repos/([^/]+)/@PACKAGE@/git/refs/tags/@ANY_VERSION@%https://github.com/$1/@PACKAGE@/releases/download/$2/@PACKAGE@-$2.tar.xz%g
+Pgp-Mode: auto