More CI runner fixes (#334)

Author: erysdren

.github/workflows/main.yml

@@ -29,6 +29,7 @@ jobs:
             libopenxr-dev                                               \
             libqscintilla2-qt5-dev                                      \
             libsdl2-dev                                                 \
+            libpng-dev                                                  \
             libvorbis-dev                                               \
             libvulkan-dev                                               \
             libwayland-dev                                              \
@@ -61,7 +62,7 @@ jobs:
             fte_target: linux64
             make_targets: "m-rel sv-rel qtv-rel qcc-rel"
             os: ubuntu-latest
-            packages: "libasound2-dev libgl-dev libegl1-mesa-dev libwayland-dev libxcursor-dev libxi-dev libxkbcommon-dev libxrandr-dev libxss-dev"
+            packages: "libpng-dev libasound2-dev libgl-dev libegl1-mesa-dev libwayland-dev libxcursor-dev libxi-dev libxkbcommon-dev libxrandr-dev libxss-dev"
           - name: win32
             fte_target: win32
             make_targets: "m-rel sv-rel qcc-rel"

CMakeLists.txt

@@ -1532,7 +1532,7 @@ IF(FTE_PLUG_HL2)
 		plugins/hl2/mat_vmt.c
 	)
 	SET_TARGET_PROPERTIES(plug_hl2 PROPERTIES COMPILE_DEFINITIONS "FTEPLUGIN;MULTITHREAD;${FTE_LIB_DEFINES}")
-	TARGET_LINK_LIBRARIES(plug_hl2 ${SYS_LIBS})
+	TARGET_LINK_LIBRARIES(plug_hl2 ${SYS_LIBS} ${ZLIB_LIBRARIES})
 
 	EMBED_PLUGIN_META(hl2 "HalfLife2 Formats Plugin" "Adds support for reading various file formats used by HalfLife2. Requires mod support to be useful.")
 ENDIF()