Bump symfony/process from 3.4.24 to 3.4.26

Bumps [symfony/process](https://github.com/symfony/process) from 3.4.24 to 3.4.26.
- [Release notes](https://github.com/symfony/process/releases)
- [Changelog](https://github.com/symfony/process/blob/master/CHANGELOG.md)
- [Commits](https://github.com/symfony/process/compare/v3.4.24...v3.4.26

)

Signed-off-by: dependabot[bot] <support@dependabot.com>

composer.lock

@@ -236,7 +236,7 @@
             ],
             "description": "Autolink URLs in text or html",
             "homepage": "http://www.kwi.dk/projects/php/UrlLinker/",
-            "time": "2014-12-28T23:05:00+00:00"
+            "time": "2014-12-28T22:05:00+00:00"
         },
         {
             "name": "pear-pear.horde.org/Horde_Crypt_Blowfish",
@@ -2950,16 +2950,16 @@
         },
         {
             "name": "symfony/process",
-            "version": "v3.4.24",
+            "version": "v3.4.26",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/process.git",
-                "reference": "009f8dda80930e89e8344a4e310b08f9ff07dd2e"
+                "reference": "a9c4dfbf653023b668c282e4e02609d131f4057a"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/process/zipball/009f8dda80930e89e8344a4e310b08f9ff07dd2e",
-                "reference": "009f8dda80930e89e8344a4e310b08f9ff07dd2e",
+                "url": "https://api.github.com/repos/symfony/process/zipball/a9c4dfbf653023b668c282e4e02609d131f4057a",
+                "reference": "a9c4dfbf653023b668c282e4e02609d131f4057a",
                 "shasum": ""
             },
             "require": {
@@ -2995,7 +2995,7 @@
             ],
             "description": "Symfony Process Component",
             "homepage": "https://symfony.com",
-            "time": "2019-01-16T13:27:11+00:00"
+            "time": "2019-04-08T16:15:54+00:00"
         },
         {
             "name": "theseer/tokenizer",