[gimp-macos-build] Add icu55

[Alex Samorukov <asamorukov src gnome org>]

commit 88bf430d774ae3be288775d5d4e360292cb6293a
Author: Alex Samorukov <samm os2 kiev ua>
Date:   Sun Jun 21 21:04:58 2020 +0200

    Add icu55

 .circleci/config.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.circleci/config.yml b/.circleci/config.yml
index e8fd0a3..c75fb0b 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -63,7 +63,7 @@ jobs:
               - bootstrap-v19
         - run:
             name: Bootstrap
-            command: source ~/.profile && jhbuild build meta-gtk-osx-freetype meta-gtk-osx-bootstrap 
meta-gtk-osx-core
+            command: source ~/.profile && jhbuild build icu55 meta-gtk-osx-freetype meta-gtk-osx-bootstrap 
meta-gtk-osx-core
         - run:
             name: Cleanup
             command: find  ~/gtk/source -type d -mindepth 1 -maxdepth 1 | xargs -I% rm -rf %/*