Fix PHP 8.1 deprecation notices

composer.json

@@ -9,7 +9,7 @@
     },
 
     "require" : {
-        "php" : ">=5.3.3"
+        "php" : "^7.0|^8.0"
     },
 
     "replace" : {

src/Bernard/Queue/InMemoryQueue.php

@@ -28,7 +28,7 @@ public function __construct($name)
     /**
      * {@inheritDoc}
      */
-    public function count()
+    public function count(): int
     {
         $this->errorIfClosed();
 

src/Bernard/Queue/PersistentQueue.php

@@ -45,7 +45,7 @@ public function register()
     /**
      * {@inheritDoc}
      */
-    public function count()
+    public function count(): int
     {
         $this->errorIfClosed();
 

src/Bernard/QueueFactory/InMemoryFactory.php

@@ -38,7 +38,7 @@ public function all()
     /**
      * @return integer
      */
-    public function count()
+    public function count(): int
     {
         return count($this->queues);
     }

src/Bernard/QueueFactory/PersistentFactory.php

@@ -65,7 +65,7 @@ public function exists($queueName)
     /**
      * @return integer
      */
-    public function count()
+    public function count(): int
     {
         return count($this->connection->listQueues());
     }