Update JSR305 to 3.0

Currently this artifact is listed as dependency to Google Guice. This
is wrong: it's not used by Guice, but by closure-templates. However,
it's also used directly by gitiles-servlet, so put it in the
top-level lib package. (In general we have dependencies in lib
subpackages if they are used directly only within that package.)

Change-Id: I5ab10ed2c0f92d41d358b0a184d9e3777cc1d67a

lib/soy/BUCK

diff --git a/lib/soy/BUCK b/lib/soy/BUCK
index 0b2b1c4..21fbd94 100644
--- a/lib/soy/BUCK
+++ b/lib/soy/BUCK
@@ -2,7 +2,10 @@
   name = 'soy',
   id = 'com.google.template:soy:e74fcfa284a1e31d42ac93e53cb84a71f638c70b',
   sha1 = '1c75a007218f29d6124c46c8b18f4158cba4839c',
-  deps = [ ':icu4j' ],
+  deps = [
+    ':icu4j',
+    '//lib:jsr305',
+  ],
   repository = GERRIT,
 )