Increment platform-tools version to 29.0.6.

Test: none
Change-Id: Iee5df0798932d023f66b73865405dcbbeacfb9cd
diff --git a/sdk/plat_tools_source.prop_template b/sdk/plat_tools_source.prop_template
index b3206d8..f9c5398 100644
--- a/sdk/plat_tools_source.prop_template
+++ b/sdk/plat_tools_source.prop_template
@@ -1,2 +1,2 @@
 Pkg.UserSrc=false
-Pkg.Revision=29.0.5
+Pkg.Revision=29.0.6