build: Add boost to the dependencies

Since the project uses boost library add it to meson dependencies.

Change-Id: I97d0ffe9ea7738fedf0454eed6b949d13ece33b7
Signed-off-by: Konstantin Aladyshev <aladyshev22@gmail.com>
diff --git a/meson.build b/meson.build
index e239c02..e916549 100644
--- a/meson.build
+++ b/meson.build
@@ -14,6 +14,7 @@
 deps = [
   dependency('sdbusplus'),
   dependency('systemd'),
+  dependency('boost'),
 ]
 
 if get_option('log-threshold')