.travis.yml in rakuten_web_service-1.12.0 vs .travis.yml in rakuten_web_service-1.13.0

@@ -1,43 +1,31 @@
 language: ruby
 rvm:
-  - 2.4.3
-  - 2.5.0
-  - 2.6.0
+  - 2.5
+  - 2.6
+  - 2.7
   - ruby-head
 
-env:
-  - INTEGRATION=yes
-  - INTEGRATION=no
-
 group: travis_lts
 
 cache: bundler
 
 before_install:
   - curl -L https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64 > ./cc-test-reporter
   - chmod +x ./cc-test-reporter
   - ./cc-test-reporter before-build
   - gem install bundler
+  - bundle config set without 'vscode'
 
-bundler_args:  --without vscode
-
 script:
   - bundle exec rake
 
 after_script:
   - ./cc-test-reporter after-build --exit-code $TRAVIS_TEST_RESULT
 
 matrix:
   allow_failures:
   - rvm: ruby-head
-  exclude:
-  - rvm: 2.4.3
-    env: INTEGRATION=yes
-  - rvm: 2.5.0
-    env: INTEGRATION=yes
-  - rvm: ruby-head
-    env: INTEGRATION=yes
 
 notifications:
   email: false
   webhooks:
     urls: