mojo/discovery: Upgrade to mojov7 with discovery 0.0.14

This puts us at mojo 0.2.15

MultiPart: 3/3

Change-Id: I8f21cfca0b3f5784b9efa00eb3d00584030938f9
diff --git a/pubspec.yaml b/pubspec.yaml
index d6f5a84..a01a5cc 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -2,9 +2,9 @@
 description: Discovery is a discovery system for developers that makes it easy to advertise apps and scan for them. It works over MDNS and BLE.
 homepage: https://github.com/vanadium/mojo.discovery
 name: v23discovery
-version: 0.0.13
+version: 0.0.14
 dependencies:
-  mojo_sdk: 0.2.11
+  mojo_sdk: 0.2.15
 dev_dependencies:
   dart_style: any
   test: any