Fix local meson build

Provide all the missing dependencies for the local meson build.

Tested:
"meson setup build && cd build && meson compile" finishes successfully.

Change-Id: If1d20df64610e47d2be813a8ffbe7602b6d00181
Signed-off-by: Konstantin Aladyshev <aladyshev22@gmail.com>
diff --git a/src/meson.build b/src/meson.build
index 76b8ef8..bd3a2cb 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -32,6 +32,7 @@
         'generate-cpp'
     ],
     depend_files: templates_depends,
+    env: sdbusplus_python_env,
     output: 'generated.hpp',
 )
 
@@ -49,6 +50,7 @@
 ]
 
 deps = [
+    cereal_dep,
     sdbusplus_dep,
     sdeventplus_dep,
     phosphor_dbus_interfaces_dep,