App Bootstrap Cache version changes

app/bootstrap.php.cache

@@ -2428,12 +2428,12 @@ protected $booted = false;
 protected $name;
 protected $startTime;
 protected $loadClassCache;
-const VERSION ='2.8.4-DEV';
-const VERSION_ID = 20804;
+const VERSION ='2.8.6';
+const VERSION_ID = 20806;
 const MAJOR_VERSION = 2;
 const MINOR_VERSION = 8;
-const RELEASE_VERSION = 4;
-const EXTRA_VERSION ='DEV';
+const RELEASE_VERSION = 6;
+const EXTRA_VERSION ='';
 const END_OF_MAINTENANCE ='11/2018';
 const END_OF_LIFE ='11/2019';
 public function __construct($environment, $debug)
@@ -2883,8 +2883,9 @@ return true;
 }
 public function findFile($class)
 {
-if (false === $file = apcu_fetch($this->prefix.$class)) {
-apcu_store($this->prefix.$class, $file = $this->decorated->findFile($class));
+$file = apcu_fetch($this->prefix.$class, $success);
+if (!$success) {
+apcu_store($this->prefix.$class, $file = $this->decorated->findFile($class) ?: null);
 }
 return $file;
 }