minor symfony#24039 [TwigBundle] require twig-bridge ~3.4 (nicolas-grekas)

This PR was merged into the 3.4 branch.

Discussion
----------

[TwigBundle] require twig-bridge ~3.4

| Q             | A
| ------------- | ---
| Branch?       | 3.4
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

Injecting "twig" as first arg of the DebugCommand works only in ^3.4 - as of symfony#23519.

Commits
-------

03816b7 [TwigBundle] require twig-bridge ~3.4

Author: nicolas-grekas

src/Symfony/Bundle/TwigBundle/composer.json

@@ -18,7 +18,7 @@
     "require": {
         "php": "^5.5.9|>=7.0.8",
         "symfony/config": "~3.2|~4.0",
-        "symfony/twig-bridge": "^3.3|~4.0",
+        "symfony/twig-bridge": "^3.4|~4.0",
         "symfony/http-foundation": "~2.8|~3.0|~4.0",
         "symfony/http-kernel": "^3.3|~4.0",
         "twig/twig": "~1.34|~2.4"