Update composer.json (#365)

Author: dbu

composer.json

@@ -35,11 +35,11 @@
         "php-http/message-factory": "^1.0.2",
         "php-http/stopwatch-plugin": "^1.2",
         "psr/http-message": "^1.0",
-        "symfony/config": "^3.4.20 || ^4.2.1 || ^5.0",
-        "symfony/dependency-injection": "^3.4.20 || ^4.2.1 || ^5.0",
-        "symfony/event-dispatcher": "^3.4.20 || ^4.2.1 || ^5.0",
-        "symfony/http-kernel": "^3.4.20 || ^4.2.1 || ^5.0",
-        "symfony/options-resolver": "^3.4.20 || ^4.2.1 || ^5.0"
+        "symfony/config": "^3.4.34 || ^4.2.12 || ^5.0",
+        "symfony/dependency-injection": "^3.4.34 || ^4.2.12 || ^5.0",
+        "symfony/event-dispatcher": "^3.4.34 || ^4.2.12 || ^5.0",
+        "symfony/http-kernel": "^3.4.34 || ^4.2.12 || ^5.0",
+        "symfony/options-resolver": "^3.4.34 || ^4.2.12 || ^5.0"
     },
     "conflict": {
         "php-http/guzzle6-adapter": "<1.1",
@@ -54,15 +54,15 @@
         "php-http/mock-client": "^1.2",
         "php-http/promise": "^1.0",
         "polishsymfonycommunity/symfony-mocker-container": "^1.0",
-        "symfony/browser-kit": "^3.4.20 || ^4.2.1 || ^5.0",
-        "symfony/cache": "^3.4.20 || ^4.2.1 || ^5.0",
-        "symfony/dom-crawler": "^3.4.20 || ^4.2.1 || ^5.0",
-        "symfony/framework-bundle": "^3.4.0 || ^4.2 || ^5.0",
-        "symfony/http-foundation": "^3.4.20 || ^4.2.1 || ^5.0",
-        "symfony/phpunit-bridge": "^3.4 || ^4.2 || ^5.0",
-        "symfony/stopwatch": "^3.4.20 || ^4.2.1 || ^5.0",
-        "symfony/twig-bundle": "^3.4.20 || ^4.2.1 || ^5.0",
-        "symfony/web-profiler-bundle": "^3.4.20 || ^4.2.1 || ^5.0",
+        "symfony/browser-kit": "^3.4.34 || ^4.2.12 || ^5.0",
+        "symfony/cache": "^3.4.34 || ^4.2.12 || ^5.0",
+        "symfony/dom-crawler": "^3.4.34 || ^4.2.12 || ^5.0",
+        "symfony/framework-bundle": "^3.4.34 || ^4.2.12 || ^5.0",
+        "symfony/http-foundation": "^3.4.34 || ^4.2.12 || ^5.0",
+        "symfony/phpunit-bridge": "^3.4.34 || ^4.2.12 || ^5.0",
+        "symfony/stopwatch": "^3.4.34 || ^4.2.12 || ^5.0",
+        "symfony/twig-bundle": "^3.4.34 || ^4.2.12 || ^5.0",
+        "symfony/web-profiler-bundle": "^3.4.34 || ^4.2.12 || ^5.0",
         "twig/twig": "^1.41 || ^2.10 || ^3.0"
     },
     "suggest": {