Bump symfony/process from 4.3.7 to 4.3.8

Bumps [symfony/process](https://github.com/symfony/process) from 4.3.7 to 4.3.8.
- [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/v4.3.7...v4.3.8)

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

composer.lock

@@ -1188,7 +1188,7 @@
         },
         {
             "name": "symfony/process",
-            "version": "v4.3.7",
+            "version": "v4.3.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/process.git",