phosphor-mapper.bb: bump version

Change-Id: I2a410ecda22d00ce118b0feeb3b2e56d9302d1f1
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/common/recipes-phosphor/dbus/phosphor-mapper.bb b/common/recipes-phosphor/dbus/phosphor-mapper.bb
index c515a09..3a008b6 100644
--- a/common/recipes-phosphor/dbus/phosphor-mapper.bb
+++ b/common/recipes-phosphor/dbus/phosphor-mapper.bb
@@ -34,7 +34,7 @@
         "
 SRC_URI += "git://github.com/openbmc/phosphor-objmgr"
 
-SRCREV = "8b633b7ea4ab671a73c1f57d878041f83f672a7e"
+SRCREV = "cb2e1b308c51036667766a7d6b9b288399470b99"
 
 S = "${WORKDIR}/git"