meson: fail-monitor: add missing dependency

Tested by building fail-monitor.

Change-Id: I776197d8448f9e3da106c5f895985c99ad437f74
Signed-off-by: Brad Bishop <bradbish@qti.qualcomm.com>
diff --git a/meson.build b/meson.build
index 8b17065..d170cf3 100644
--- a/meson.build
+++ b/meson.build
@@ -159,7 +159,7 @@
     executable(
         'phosphor-unit-failure-monitor',
         ['fail-monitor/main.cpp', 'fail-monitor/monitor.cpp'],
-        dependencies: [cli11, phosphor_logging],
+        dependencies: [cli11, phosphor_logging, sdbusplus],
         install: true,
     )
 endif