macos: use '-lresolv' when building the Qt gui

this is needed to be passed to be able to build
the GUI since our c-archive libgoshim.a imports
the 'net' package

ref: https://github.com/golang/go/issues/58159
https://tip.golang.org/doc/go1.20#cgo

bitmask.pro

@@ -31,7 +31,7 @@ ICON = $$VENDOR_PATH/icon.png
 
 macx {
     ICON = $$VENDOR_PATH/assets/icon.icns
-    LIBS += -framework Security -framework CoreFoundation
+    LIBS += -framework Security -framework CoreFoundation -lresolv
 }
 win32 {
     RC_ICONS = $$VENDOR_PATH/assets/icon.ico