[dev.boringcrypto] misc/boring: add go1.12.6b4 and go1.11.11b4 releases

Change-Id: I90b79a5519f92bb56370e11fd47c06dabaf845e8
Reviewed-on: https://go-review.googlesource.com/c/go/+/182338
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
diff --git a/misc/boring/RELEASES b/misc/boring/RELEASES
index db53dbe..b564bb1 100644
--- a/misc/boring/RELEASES
+++ b/misc/boring/RELEASES
@@ -35,3 +35,7 @@
 go1.11.6b4 7be8a5843a9b src https://go-boringcrypto.storage.googleapis.com/go1.11.6b4.src.tar.gz a56b45e24b61ad7b3c90dfd906cd22426a4de9e2e697b4c9ef07a2af047bcb0d
 go1.12.5b4 ad495d31d908 linux-amd64 https://go-boringcrypto.storage.googleapis.com/go1.12.5b4.linux-amd64.tar.gz df0e64958cf90f27a65b2175eb80bc34a601136eed8e5559bed2a9e349e33707
 go1.12.5b4 ad495d31d908 src https://go-boringcrypto.storage.googleapis.com/go1.12.5b4.src.tar.gz 054d482896a77ae2d7d24c7adf08da5a4401b938871e61a5cdabc735c54cea9f
+go1.11.11b4 346babe6a67f linux-amd64 https://go-boringcrypto.storage.googleapis.com/go1.11.11b4.linux-amd64.tar.gz c4dd44fa00f491b3d2ea808af8a6c234f915adb27c014512d725bafc4784d75f
+go1.11.11b4 346babe6a67f src https://go-boringcrypto.storage.googleapis.com/go1.11.11b4.src.tar.gz 57a724a72f0ba8620cbb48288f39c86ed513c241509ddf73231f4c8cd2a983ac
+go1.12.6b4 6b86b09ad4d3 linux-amd64 https://go-boringcrypto.storage.googleapis.com/go1.12.6b4.linux-amd64.tar.gz eebc2e7f37555760adb361985b861d0cd34f9401cf7456d8d2f2f3082a60eee1
+go1.12.6b4 6b86b09ad4d3 src https://go-boringcrypto.storage.googleapis.com/go1.12.6b4.src.tar.gz 0e6e9aaf2c72a7e61280ce1e77b2ea24f01a59f4c1e6f0aa72b753206724fd3a