[gimp-macos-build] Update cache version to rebuild

[Alex Samorukov <asamorukov src gnome org>]

commit 4d4640171b6d8e22f63e7df302ec140e60bc4278
Author: Oleksii Samorukov <oleksii_samorukov mckinsey com>
Date:   Fri Nov 1 21:24:43 2019 +0100

    Update cache version to rebuild

 .circleci/config.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/.circleci/config.yml b/.circleci/config.yml
index e1e9c5f..f765994 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-v4
+              - gimp-2.10.14-v5
               - webkit-v13
               - gimp-deps-v2
               - bootstrap-v14
@@ -121,7 +121,7 @@ jobs:
         - save_cache:
             paths:
               - ~/gtk
-            key: gimp-2.10.14-v4
+            key: gimp-2.10.14-v5
         - run:
             name: Importing signing certificate
             command: |