Update Apache SSHD to 2.4

Change-Id: If15bbf1a25b9125f08b38077b01ba52245080d70
diff --git a/tools/nongoogle.bzl b/tools/nongoogle.bzl
index 0c37270..5956751 100644
--- a/tools/nongoogle.bzl
+++ b/tools/nongoogle.bzl
@@ -27,18 +27,18 @@
         sha1 = "12d3de920c85a3667712877066f93e713c733977",
     )
 
-    SSHD_VERS = "2.3.0"
+    SSHD_VERS = "2.4.0"
 
     maven_jar(
         name = "sshd",
         artifact = "org.apache.sshd:sshd-core:" + SSHD_VERS,
-        sha1 = "21aeea9deba96c9b81ea0935fa4fac61aa3cf646",
+        sha1 = "102eefb7e195aae25096f54f2398e54cb0fe839c",
     )
 
     maven_jar(
         name = "sshd-common",
         artifact = "org.apache.sshd:sshd-common:" + SSHD_VERS,
-        sha1 = "8b6e3baaa0d35b547696965eef3e62477f5e74c9",
+        sha1 = "017be0597f41449518762fc529c707148007f4bc",
     )
 
     maven_jar(
@@ -56,7 +56,7 @@
     maven_jar(
         name = "sshd-mina",
         artifact = "org.apache.sshd:sshd-mina:" + SSHD_VERS,
-        sha1 = "55dc0830dfcbceba01f9460812ee454978a15fe8",
+        sha1 = "8aa8715d07bd61ad8315df66d43c0c04b1b755c8",
     )
 
     # elasticsearch-rest-client explicitly depends on this version