.travis.yml in harvesting-0.5.1 vs .travis.yml in harvesting-0.6.0

- old
+ new

@@ -2,9 +2,10 @@
 language: ruby
 rvm:
   - 2.5.8
   - 2.6.6
   - 2.7.1
+  - 3.0
 env:
   - HARVEST_FIRST_NAME=Aaron HARVEST_LAST_NAME=Burr HARVEST_ACCOUNT_ID=112341234 HARVEST_NON_ADMIN_ACCOUNT_ID=112341234 HARVEST_ACCESS_TOKEN=112341234 HARVEST_NON_ADMIN_ACCESS_TOKEN=112341234 HARVEST_ADMIN_FULL_NAME=112341234
 
 before_install: gem install bundler -v 2.1.4