[release-branch.go1.11-security] doc: document Go 1.11.5 and Go 1.10.8

Change-Id: I97ce42e1e9a6d10bf1eeccc2763e043d8ebe5bab
Reviewed-on: https://team-review.git.corp.google.com/c/400906
Reviewed-by: Filippo Valsorda <[email protected]>
(cherry picked from commit efe766c7c0918da96aa21e1ac03a9d3fa57ca156)
Reviewed-on: https://team-review.git.corp.google.com/c/401144

Author: julieqiu

doc/devel/release.html

@@ -66,6 +66,13 @@ <h3 id="go1.11.minor">Minor revisions</h3>
 1.11.4 milestone</a> on our issue tracker for details.
 </p>
 
+<p>
+go1.11.5 (released 2019/01/23) includes a security fix to the
+<code>crypto/elliptic</code> package.
+See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.11.5+label%3ACherryPickApproved">Go
+1.11.5 milestone</a> on our issue tracker for details.
+</p>
+
 <h2 id="go1.10">go1.10 (released 2018/02/16)</h2>
 
 <p>
@@ -131,6 +138,13 @@ <h3 id="go1.10.minor">Minor revisions</h3>
 Go 1.10.7 milestone</a> on our issue tracker for details.
 </p>
 
+<p>
+go1.10.8 (released 2019/01/23) includes a security fix to the
+<code>crypto/elliptic</code> package.
+See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.10.8+label%3ACherryPickApproved">Go
+1.10.8 milestone</a> on our issue tracker for details.
+</p>
+
 <h2 id="go1.9">go1.9 (released 2017/08/24)</h2>
 
 <p>