try fixing `dpkg-shlibdeps: error: cannot find library libgtk-x11-2.0.so.0 ...`

.github/workflows/debian.yml

@@ -35,7 +35,7 @@ jobs:
         run: |
           sudo add-apt-repository ppa:coffeelibs/openjdk
           sudo apt-get update
-          sudo apt-get install debhelper devscripts dput coffeelibs-jdk-19
+          sudo apt-get install debhelper devscripts dput coffeelibs-jdk-19 libgtk2.0-0
       - name: Setup Java
         uses: actions/setup-java@v3
         with:

dist/linux/debian/control

@@ -2,7 +2,7 @@ Source: cryptomator
 Maintainer: Cryptobot <releases@cryptomator.org>
 Section: utils
 Priority: optional
-Build-Depends: debhelper (>=10), coffeelibs-jdk-19
+Build-Depends: debhelper (>=10), coffeelibs-jdk-19, libgtk2.0-0
 Standards-Version: 4.5.0
 Homepage: https://cryptomator.org
 Vcs-Git: https://github.com/cryptomator/cryptomator.git