Add Antonio Barone GPG key

Change-Id: If7eda8ef2141615aa37d9c296d38eca5b16de83c

pages/site/releases/public-keys.md

diff --git a/pages/site/releases/public-keys.md b/pages/site/releases/public-keys.md
index 07d7807..65aea0d 100644
--- a/pages/site/releases/public-keys.md
+++ b/pages/site/releases/public-keys.md
@@ -36,3 +36,4 @@
 | Patrick Hiesel   | hiesel@google.com               | 7789 759C D085 C90A 1823  63AB 710A 7242 BD5B 6C39 |              |
 | Saša Živkov      | sasa.zivkov@sap.com             | 024B 9991 1E26 0764 22A7  5AD4 4D52 61F9 26C1 290E |              |
 | Sven Selberg     | sven.selberg@gmail.com          | E92E C585 9ABA 1323 51B2  D2FA 21FB 7850 FE7F 7B44 | rsa-3072     |
+| Antonio Barone   | syntonyze@gmail.com             | 9EB1 DC3A F064 EF2D 8D3F  5AF0 074F 79B0 9FDF E577 | rsa-4096     |