minor #21684 Add missing conflict rules for phpunit (nicolas-grekas)

This PR was merged into the 2.7 branch.

Discussion
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Add missing conflict rules for phpunit

| Q             | A
| ------------- | ---
| Branch?       | 2.7
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

We forgot them in #21564

Commits
-------

3e83e02 Add missing conflict rules for phpunit

src/Symfony/Bridge/Doctrine/composer.json

@@ -33,6 +33,9 @@
         "doctrine/dbal": "~2.4",
         "doctrine/orm": "^2.4.5"
     },
+    "conflict": {
+        "phpunit/phpunit": "<4.8.35|<5.4.3,>=5.0"
+    },
     "suggest": {
         "symfony/form": "",
         "symfony/validator": "",

src/Symfony/Bundle/FrameworkBundle/composer.json

@@ -48,6 +48,9 @@
         "symfony/yaml": "^2.0.5",
         "sensio/framework-extra-bundle": "^3.0.2"
     },
+    "conflict": {
+        "phpunit/phpunit": "<4.8.35|<5.4.3,>=5.0"
+    },
     "suggest": {
         "symfony/console": "For using the console commands",
         "symfony/form": "For using forms",

src/Symfony/Component/Form/composer.json

@@ -31,6 +31,7 @@
         "symfony/translation": "^2.0.5"
     },
     "conflict": {
+        "phpunit/phpunit": "<4.8.35|<5.4.3,>=5.0",
         "symfony/doctrine-bridge": "<2.7",
         "symfony/framework-bundle": "<2.7",
         "symfony/twig-bridge": "<2.7"

src/Symfony/Component/VarDumper/composer.json

@@ -18,6 +18,9 @@
     "require": {
         "php": ">=5.3.9"
     },
+    "conflict": {
+        "phpunit/phpunit": "<4.8.35|<5.4.3,>=5.0"
+    },
     "suggest": {
         "ext-symfony_debug": ""
     },