travis: remove testing for Laravel 5.8

It's officially not supported anymore since 2020-02-26

Author: mfn

.travis.yml

@@ -15,28 +15,20 @@ matrix:
   include:
     - php: '7.1'
       env: LARAVEL='5.5.*'
-    - php: '7.1'
-      env: LARAVEL='5.8.*'
     - php: '7.2'
       env: LARAVEL='5.5.*'
-    - php: '7.2'
-      env: LARAVEL='5.8.*'
     - php: '7.2'
       env: LARAVEL='^6.0'
     - php: '7.2'
       env: LARAVEL='^7.0'
     - php: '7.3'
       env: LARAVEL='5.5.*'
-    - php: '7.3'
-      env: LARAVEL='5.8.*'
     - php: '7.3'
       env: LARAVEL='^6.0'
     - php: '7.3'
       env: LARAVEL='^7.0' INSTALL_LARAVEL=1 INSTALL_LUMEN=1
     - php: '7.3'
       env: LARAVEL='dev-master'
-    - php: '7.4'
-      env: LARAVEL='5.8.*'
     - php: '7.4'
       env: LARAVEL='^6.0'
     - php: '7.4'

CHANGELOG.md

@@ -12,6 +12,8 @@ CHANGELOG
 - Fix the infinite loop as well as sending the correct matching input data to the rule-callback [\#579 / crissi](https://github.com/rebing/graphql-laravel/pull/579)
 ### Changed
 - Refactor route files with the goal of making adding subscription support easier [\#575 / crissi](https://github.com/rebing/graphql-laravel/pull/575)
+### Removed
+- Official support for Laravel 5.8 has been removed [\596 / mfn](https://github.com/rebing/graphql-laravel/pull/596)
 
 2019-12-09, 4.0.0
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