Bump tightenco/collect from 6.11.0 to 6.12.0

Bumps [tightenco/collect](https://github.com/tightenco/collect) from 6.11.0 to 6.12.0.
- [Release notes](https://github.com/tightenco/collect/releases)
- [Commits](https://github.com/tightenco/collect/compare/v6.11.0...v6.12.0)

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

composer.lock

@@ -4367,16 +4367,16 @@
         },
         {
             "name": "symfony/var-dumper",
-            "version": "v4.4.2",
+            "version": "v4.4.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/var-dumper.git",
-                "reference": "be330f919bdb395d1e0c3f2bfb8948512d6bdd99"
+                "reference": "7cfa470bc3b1887a7b2a47c0a702a84ad614fa92"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/var-dumper/zipball/be330f919bdb395d1e0c3f2bfb8948512d6bdd99",
+                "url": "https://api.github.com/repos/symfony/var-dumper/zipball/7cfa470bc3b1887a7b2a47c0a702a84ad614fa92",
-                "reference": "be330f919bdb395d1e0c3f2bfb8948512d6bdd99",
+                "reference": "7cfa470bc3b1887a7b2a47c0a702a84ad614fa92",
                 "shasum": ""
             },
             "require": {
@@ -4439,7 +4439,7 @@
                 "debug",
                 "dump"
             ],
-            "time": "2019-12-18T13:41:29+00:00"
+            "time": "2020-01-04T13:00:46+00:00"
         },
         {
             "name": "symfony/yaml",
@@ -4502,7 +4502,7 @@
         },
         {
             "name": "tightenco/collect",
-            "version": "v6.11.0",
+            "version": "v6.12.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/tightenco/collect.git",