Fix exception throwing in GitPipe and GithubRepository classes

src/Pipelines/GitPipe.php

@@ -34,7 +34,7 @@ public function handle($content, Closure $next)
                 call_user_func($content['output'], 'git checkout failed: '.$checkout);
             }
 
-            return throw new \RuntimeException('git checkout failed: '.$checkout);
+            throw new \RuntimeException('git checkout failed: '.$checkout);
         } else {
             if (is_callable($content['output'])) {
                 call_user_func($content['output'], 'Checkout success');

src/RepositorySource/GithubRepository.php

@@ -15,7 +15,7 @@ public function getLatestVersion(): string
     {
         $this->checkConfig();
 
-        return isset($this->getLatestVersionData()['message']) ? throw new \RuntimeException($this->getLatestVersionData()['message']) : $this->getLatestVersionData()['tag_name'];
+        return isset($this->getLatestVersionData()['message']) ? throw new \Exception($this->getLatestVersionData()['message']) : $this->getLatestVersionData()['tag_name'];
     }
 
     /**
@@ -48,7 +48,7 @@ public function getVersions(): array
         $versionsData = $this->getVersionsData();
 
         if (isset($versionsData['message'])) {
-            throw new \RuntimeException($versionsData['message']);
+            throw new \Exception($versionsData['message']);
         }
 
         return $versionsData->map(function ($version) {

src/Updater.php

@@ -134,7 +134,7 @@ function ($content) {
 
                 event(new Events\UpdateFailed($current_version_in_past, $version, $th->getMessage()));
 
-                return throw $th;
+                throw $th;
             }
         } else {
             $this->output('No new version available');