Support psr/log:^2.0,^3.0 (#486)

* Support psr/log:^2.0,^3.0

* Update FileStorageTest.php

Co-authored-by: Erik Niebla <ep_niebla@hotmail.com>
Co-authored-by: Barry vd. Heuvel <barryvdh@gmail.com>

.gitignore

@@ -1,3 +1,4 @@
 composer.lock
 /vendor
-/src/DebugBar/Resources/vendor
+/src/DebugBar/Resources/vendor
+.phpunit.result.cache

composer.json

@@ -18,7 +18,7 @@
     ],
     "require": {
         "php": "^7.1|^8",
-        "psr/log": "^1.0 || ^2.0",
+        "psr/log": "^1|^2|^3",
         "symfony/var-dumper": "^2.6|^3|^4|^5"
     },
     "require-dev": {

src/DebugBar/DataCollector/MessagesCollector.php

@@ -183,7 +183,7 @@ class MessagesCollector extends AbstractLogger implements DataCollectorInterface
      * @param $message
      * @param array $context
      */
-    public function log($level, $message, array $context = array())
+    public function log($level, $message, array $context = array()): void
     {
         // For string messages, interpolate the context following PSR-3
         if (is_string($message)) {