Bump patch for imagemagick again.

Bump patch for imagemagick again.

diff --git a/image/base/install-imagemagick b/image/base/install-imagemagick
index 2685e87..47484d8 100755
--- a/image/base/install-imagemagick
+++ b/image/base/install-imagemagick
@@ -1,7 +1,7 @@
 #!/bin/bash
 set -o errexit
 
-IMAGE_MAGICK_VERSION="7.0.8-39"
+IMAGE_MAGICK_VERSION="7.0.8-40"
 LIBPNG_VERSION="1.6.36"
 
 PREFIX=/usr/local

GitHub sha: ee207cb4