Install dependencies in CI jobs

Namely, libvips.

Author: elia

.circleci/config.yml

@@ -28,6 +28,7 @@ jobs:
     steps:
       - checkout
       - browser-tools/install-chrome
+      - solidusio_extensions/dependencies
       - solidusio_extensions/run-tests-solidus-master
       - solidusio_extensions/store-test-results
       - notify
@@ -39,6 +40,7 @@ jobs:
     steps:
       - checkout
       - browser-tools/install-chrome
+      - solidusio_extensions/dependencies
       - solidusio_extensions/run-tests-solidus-current
       - solidusio_extensions/store-test-results
       - notify
@@ -50,6 +52,7 @@ jobs:
     steps:
       - checkout
       - browser-tools/install-chrome
+      - solidusio_extensions/dependencies
       - solidusio_extensions/run-tests-solidus-older
       - solidusio_extensions/store-test-results
       - notify