[gimp-macos-build] Force gimp rebuild

[Alex Samorukov <asamorukov src gnome org>]

commit 137b87b211b49285eb7d0e4dc26412adf48c3f1b
Author: Alex Samorukov <samm os2 kiev ua>
Date:   Mon Oct 28 11:13:48 2019 +0100

    Force gimp rebuild

 .circleci/config.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/.circleci/config.yml b/.circleci/config.yml
index ec3b540..0fdd9ff 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-2.10.12-v5
+              - gimp-2.10.12-v6
               - webkit-v12
               - gimp-deps-v1
               - bootstrap-v13
@@ -121,7 +121,7 @@ jobs:
         - save_cache:
             paths:
               - ~/gtk
-            key: gimp-2.10.12-v5
+            key: gimp-2.10.12-v6
         - run:
             name: Importing signing certificate
             command: |