fixup! JBR-6376: implement detecting of OS theme on linux

Adding the D-Bus libs as a dependency: it's required for src/java.desktop/linux/native/libawt/awt/dbus_interface.h

(cherry picked from commit 3fb240f)

Author: OnePatchGuy

.github/README.md

@@ -162,7 +162,7 @@ Install the necessary tools, libraries, and headers with:
 ```
 $ sudo apt-get install autoconf make build-essential libx11-dev libxext-dev libxrender-dev libxtst-dev \
        libxt-dev libxrandr-dev libcups2-dev libfontconfig1-dev libasound2-dev libspeechd-dev libwayland-dev \
-       wayland-protocols libxkbcommon-x11-0
+       wayland-protocols libxkbcommon-x11-0 libdbus-1-dev
 ```
 Get Java 23 (for instance, [Azul Zulu Builds of OpenJDK 23](https://www.azul.com/downloads/?version=java-23&os=linux&package=jdk#zulu)).