[Android] gitlab-ci.yml: Update cached gradle version

[Hugo Beauzée-Luyssen]

vlc-android | branch: master | Hugo Beauzée-Luyssen <hugo at beauzee.fr> | Mon May  6 18:49:57 2019 -0700| [ebb083168937981b1ab9641acc2918b73e74ef8e] | committer: Hugo Beauzée-Luyssen

gitlab-ci.yml: Update cached gradle version

> https://code.videolan.org/videolan/vlc-android/commit/ebb083168937981b1ab9641acc2918b73e74ef8e
---

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 4726a3051..1c98591c4 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,7 +1,7 @@
 cache:
     paths:
         - .gradle/
-        - gradle-4.10.1/
+        - gradle-5.1.1/
         - gradle/
         - gradlew