fix: Downgrade cozy-flags to v1.5.9

[email protected] seems to try to use `localStorage` on node, which
doesn't work. See cozy/cozy-libs#402

package.json

@@ -160,7 +160,7 @@
     "cozy-client-js": "0.15.0",
     "cozy-device-helper": "1.6.10",
     "cozy-doctypes": "1.39.0",
-    "cozy-flags": "1.6.0",
+    "cozy-flags": "1.5.9",
     "cozy-interapp": "0.4.5",
     "cozy-konnector-libs": "4.14.13",
     "cozy-pouch-link": "6.18.0",

yarn.lock

@@ -4650,7 +4650,14 @@ [email protected]:
     es6-promise-pool "2.5.0"
     lodash "4.17.11"
 
-[email protected], cozy-flags@^1.6.0:
+[email protected]:
+  version "1.5.9"
+  resolved "https://registry.yarnpkg.com/cozy-flags/-/cozy-flags-1.5.9.tgz#5a1726a329e86e6498bf629cf7508d4632a36e3b"
+  integrity sha512-so2PDfBTT4770jG8cXDXs9wUd1kTp6Wnf/IfnONaJKZmjqFf3THJ8cK6jN6zkgLZeDGJbdAutd66g8/XnoOhhw==
+  dependencies:
+    detect-node "2.0.4"
+
+cozy-flags@^1.6.0:
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/cozy-flags/-/cozy-flags-1.6.0.tgz#dcbadf075279e9db2f24df99dc541392d9994b5b"
   integrity sha512-fFg6H0NmZyom6kJvBGRdIPBwT3qKzCR8UzeLcpIoLcx8uqlcbMqpA+uphcVyJNbSUiPyR1I9qUqOEuGx7s9MFg==