Use ES 7.7

ezimuel · ezimuel · commit 3cbf2fba7130 · 2020-03-27T22:17:32.000+01:00
diff --git a/.ci/test-matrix.yml b/.ci/test-matrix.yml
@@ -1,6 +1,6 @@
 ---
 STACK_VERSION:
-  - 7.x-SNAPSHOT
+  - 7.7.0-SNAPSHOT
 
 PHP_VERSION:
   - 7.4-cli
