.travis.yml in spree_gateway-3.9.3 vs .travis.yml in spree_gateway-3.9.4

@@ -1,18 +1,21 @@
 os: linux
 dist: bionic
 
+cache: bundler
+
 addons:
   apt:
     sources:
       - google-chrome
     packages:
       - google-chrome-stable
 
 services:
   - mysql
   - postgresql
+  - redis-server
 
 language: ruby
 
 rvm:
   - 2.7
@@ -20,24 +23,10 @@
 
 env:
   - DB=mysql
   - DB=postgres
 
-gemfile:
-  - gemfiles/spree_3_7.gemfile
-  - gemfiles/spree_4_1.gemfile
-  - gemfiles/spree_master.gemfile
-
-jobs:
-  allow_failures:
-  - gemfile: gemfiles/spree_master.gemfile
-  exclude:
-  - rvm: 3.0
-    gemfile: gemfiles/spree_4_1.gemfile
-  - rvm: 3.0
-    gemfile: gemfiles/spree_3_7.gemfile
-
 before_install:
   - mysql -u root -e "GRANT ALL ON *.* TO 'travis'@'%';"
 
 before_script:
   - CHROME_MAIN_VERSION=`google-chrome-stable --version | sed -E 's/(^Google Chrome |\.[0-9]+ )//g'`
@@ -45,6 +34,6 @@
   - curl "https://chromedriver.storage.googleapis.com/${CHROMEDRIVER_VERSION}/chromedriver_linux64.zip" -O
   - unzip chromedriver_linux64.zip -d ~/bin
 
 script:
   - bundle exec rake test_app
-  - bundle exec rake spec
\ No newline at end of file
+  - bundle exec rake spec