CI: Use 2.6.3 (#745)

olleolleolle · LeFnord · commit 2263eceadb82 · 2019-06-06T19:19:14.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -9,7 +9,7 @@ after_success:
 rvm:
   - 2.4.6
   - 2.5.5
-  - 2.6.2
+  - 2.6.3
 env:
   - MODEL_PARSER=grape-swagger-entity
   - MODEL_PARSER=grape-swagger-representable
