[gimp-macos-build] Update gimp patch

[Alex Samorukov <asamorukov src gnome org>]

commit dc852cb0706d407e54200f1bb7de152ccb5d57ec
Author: Oleksii Samorukov <oleksii_samorukov mckinsey com>
Date:   Fri Nov 1 23:29:43 2019 +0100

    Update gimp patch

 .circleci/config.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/.circleci/config.yml b/.circleci/config.yml
index f765994..cb40824 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -65,7 +65,7 @@ jobs:
         # we need to make it automatically depended on the corresponding modules
         - restore_cache:
             keys:
-              - gimp-2.10.14-v5
+              - gimp-2.10.14-v6
               - webkit-v13
               - gimp-deps-v2
               - bootstrap-v14
@@ -121,7 +121,7 @@ jobs:
         - save_cache:
             paths:
               - ~/gtk
-            key: gimp-2.10.14-v5
+            key: gimp-2.10.14-v6
         - run:
             name: Importing signing certificate
             command: |