Merge version 1.15.8-4+rpi1 and 1.15.9-1 to produce 1.15.9-1+rpi1

diff --cc debian/changelog
index 4cd05f6a8229b90568aabbd2ee1a977672596b00,6946f62247c2637b73fc339a4e16d1e2d991a6d9..265a6196b4a89d3865289e98b1cc025e3678afec
--- 1/debian/changelog
--- 2/debian/changelog
+++ b/debian/changelog
@@@ -1,14 -1,11 +1,23 @@@
- golang-1.15 (1.15.8-4+rpi1) bullseye-staging; urgency=medium
++golang-1.15 (1.15.9-1+rpi1) bullseye-staging; urgency=medium
 +
 +  [changes brought forward from golang-1.10 1.10~rc2-1+rpi1 by Peter Michael Green <plugwash@raspbian.org> at Sat, 24 Feb 2018 12:22:04 +0000]
 +  * Build with GOARM=6
 +  * Disable testsuite.
 +  * Fix clean target.
 +
 +  [changes introduced in golang-1.12 1.12.7-3+rpi1 by Peter Michael Green]
 +  * Further clean target fixing.
 +
-  -- Raspbian forward porter <root@raspbian.org>  Mon, 01 Mar 2021 14:34:01 +0000
++ -- Raspbian forward porter <root@raspbian.org>  Thu, 18 Mar 2021 19:28:47 +0000
++
+ golang-1.15 (1.15.9-1) unstable; urgency=medium
+ 
+   * Team upload.
+   * New upstream version 1.15.9
+     + encoding/xml: infinite loop when using `xml.NewTokenDecoder` with a
+       custom `TokenReader`. CVE-2021-27918
+ 
+  -- Shengjing Zhu <zhsj@debian.org>  Thu, 11 Mar 2021 23:43:18 +0800
  
  golang-1.15 (1.15.8-4) unstable; urgency=medium