Bump "phpunit/phpunit" to ^7.5 and build on PHP 7.4 stable

Author: phansys

.travis.yml

@@ -14,13 +14,12 @@ matrix:
           env: SYMFONY_VERSION=4.4.*
         - php: 7.3
           env: SYMFONY_VERSION=4.4.*
-        - php: 7.4snapshot
+        - php: 7.4
           env: SYMFONY_VERSION=4.4.*
         - php: nightly
           env: SYMFONY_VERSION=4.4.*
 
     allow_failures:
-        - php: 7.4snapshot
         - php: nightly
 
 branches:

composer.json

@@ -27,7 +27,7 @@
     },
     "require-dev": {
         "ext-pcntl": "*",
-        "phpunit/phpunit": "^5.7",
+        "phpunit/phpunit": "^7.5",
         "php-coveralls/php-coveralls": "^2.0",
         "doctrine/doctrine-fixtures-bundle": "^3.0.0",
         "liip/functional-test-bundle": "^3.2",