Support grype on scanner update script

$ bundle exec rake update_grype
Version has changed from 0.13.0 to 0.15.0
Creating update-grype-to-0.15.0-2021-07-28 branch

$ git log
commit 50c8db6271641ba6dde129d3a46988612fff477c (HEAD -> update-grype-to-0.15.0-2021-07-28)
Author: Thiago Figueiró <tfigueiro@gitlab.com>
Date:   Wed Jul 28 14:07:39 2021 +1000

    Update grype to version 0.15.0

    Changelog: changed

git show

diff --git a/lib/template/grype.tpl b/lib/template/grype.tpl
index fa50112..b3987b4 100644
--- a/lib/template/grype.tpl
+++ b/lib/template/grype.tpl
@@ -89,7 +89,7 @@
       "vendor": {
         "name": "Anchore"
       },
-      "version": "0.13.0"
+      "version": "0.15.0"
     },
     "type": "container_scanning",
     "start_time": "",
diff --git a/version/GRYPE_VERSION b/version/GRYPE_VERSION
index 54d1a4f..7092c7c 100644
--- a/version/GRYPE_VERSION
+++ b/version/GRYPE_VERSION
@@ -1 +1 @@
-0.13.0
+0.15.0