Update JWT library to support PHP 8; bumps minimum PHP version for Pterodactyl to 7.4

app/Services/Nodes/NodeJWTService.php

@@ -3,12 +3,12 @@
 namespace Pterodactyl\Services\Nodes;
 
 use DateTimeImmutable;
-use Lcobucci\JWT\Builder;
 use Carbon\CarbonImmutable;
 use Illuminate\Support\Str;
-use Lcobucci\JWT\Signer\Key;
 use Pterodactyl\Models\Node;
+use Lcobucci\JWT\Configuration;
 use Lcobucci\JWT\Signer\Hmac\Sha256;
+use Lcobucci\JWT\Signer\Key\InMemory;
 
 class NodeJWTService
 {
@@ -68,15 +68,15 @@ class NodeJWTService
      * @param \Pterodactyl\Models\Node $node
      * @param string|null $identifiedBy
      * @param string $algo
-     * @return \Lcobucci\JWT\Token
+     * @return \Lcobucci\JWT\Token\Plain
      */
     public function handle(Node $node, string $identifiedBy, string $algo = 'md5')
     {
-        $signer = new Sha256;
-
         $identifier = hash($algo, $identifiedBy);
+        $config = Configuration::forSymmetricSigner(new Sha256, InMemory::plainText($node->getDecryptedKey()));
 
-        $builder = (new Builder)->issuedBy(config('app.url'))
+        $builder = $config->builder()
+            ->issuedBy(config('app.url'))
             ->permittedFor($node->getConnectionAddress())
             ->identifiedBy($identifier)
             ->withHeader('jti', $identifier)
@@ -97,6 +97,6 @@ class NodeJWTService
 
         return $builder
             ->withClaim('unique_id', Str::random(16))
-            ->getToken($signer, new Key($node->getDecryptedKey()));
+            ->getToken($config->signer(), $config->signingKey());
     }
 }