test_res_pjsip_scheduler: Add 'depends' on pjproject in MODULEINFO

Since the file was missing the depends on pjproject, it wasn't
picking up the pjproject related include path.  If there was no
system installed pjproject and pjproject-bundled was used, a compile
would fail because pjsip.h wasn't found.

ASTERISK-26139 #close

Change-Id: I2ee64a999051452bc198c4e2c168c70769cd3757

tests/test_res_pjsip_scheduler.c

@@ -26,6 +26,7 @@
 
 /*** MODULEINFO
 	<depend>TEST_FRAMEWORK</depend>
+	<depend>pjproject</depend>
 	<depend>res_pjsip</depend>
 	<support_level>core</support_level>
  ***/