.travis.yml in fluent-plugin-out-http-1.3.0 vs .travis.yml in fluent-plugin-out-http-1.3.1

@@ -1,25 +1,25 @@
-rvm:
-  - 2.2
-  - 2.3
-  - 2.4.5
-  - 2.5.3
-  - 2.6.0
-  - ruby-head
-
-os:
-  - linux
-  - osx
-
-dist: trusty
-
-gemfile:
-  - Gemfile
-
-before_install:
-  - gem update --system=2.7.8
-
-script: bundle exec rake test
-
-matrix:
-  allow_failures:
-    - rvm: ruby-head
+rvm:
+  - 2.2
+  - 2.3
+  - 2.4.5
+  - 2.5.3
+  - 2.6.0
+  - ruby-head
+
+os:
+  - linux
+  - osx
+
+dist: trusty
+
+gemfile:
+  - Gemfile
+
+before_install:
+  - gem update --system=2.7.8
+
+script: bundle exec rake test
+
+matrix:
+  allow_failures:
+    - rvm: ruby-head