[dev.boringcrypto] misc/boring: add new releases to RELEASES file

Change-Id: I2948f8045f59cd55f82c68ae2a521e8c76f2b433
Reviewed-on: https://go-review.googlesource.com/c/go/+/341089
Trust: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Roland Shoemaker <roland@golang.org>
diff --git a/misc/boring/RELEASES b/misc/boring/RELEASES
index bc860bc..cc73cd1 100644
--- a/misc/boring/RELEASES
+++ b/misc/boring/RELEASES
@@ -147,3 +147,7 @@
 go1.15.14b5 ddf078e08dc6 src https://go-boringcrypto.storage.googleapis.com/go1.15.14b5.src.tar.gz 0022b68f04a5d8553cfd838d3fe226f18e7095194300b2be4fc49a689daf0e1b
 go1.16.6b7 6a6b41a8441e linux-amd64 https://go-boringcrypto.storage.googleapis.com/go1.16.6b7.linux-amd64.tar.gz f7f33064643ce0ab8ac1cede100e7eee8509a970178f5be961d9fba331226067
 go1.16.6b7 6a6b41a8441e src https://go-boringcrypto.storage.googleapis.com/go1.16.6b7.src.tar.gz a1079dd2df6aad3bad584c4187dab98a264075b56b1d257ba27d956340ff7bbf
+go1.15.15b5 dd96ded6c86b linux-amd64 https://go-boringcrypto.storage.googleapis.com/go1.15.15b5.linux-amd64.tar.gz 719d818f70c6eb1e753910fe21624832cf3f719540f22f89863e959ff68c0001
+go1.15.15b5 dd96ded6c86b src https://go-boringcrypto.storage.googleapis.com/go1.15.15b5.src.tar.gz af2d44c8eef02e093c077c085fbe6964af0ca715f95f4bcea0809fa211cc4ded
+go1.16.7b7 0d02a0d966b6 linux-amd64 https://go-boringcrypto.storage.googleapis.com/go1.16.7b7.linux-amd64.tar.gz d4ca2906640edd9299d12d8204aae0d848b497b79b92424d8705ae748e16f3c5
+go1.16.7b7 0d02a0d966b6 src https://go-boringcrypto.storage.googleapis.com/go1.16.7b7.src.tar.gz f65503abf459ba1d2f77d4d023fcebd19c62e7c34d3ffd0f1aebb598ffa153d9