Add PHP 8.2, drop 7.4 from Travis

.travis.yml

@@ -1,11 +1,15 @@
-dist: bionic
+dist: jammy
 
 language: php
 
+services:
+  - mysql
+  - redis
+
 php:
-  - '7.4'
   - '8.0'
   - '8.1'
+  - '8.2'
 
 env:
   global:
@@ -18,14 +22,14 @@ env:
 # Only run the coding standards check once.
 matrix:
   exclude:
-    - php: 7.4
-      env: TEST_SUITE=PHP_CodeSniffer
-    - php: 7.4
-      env: TEST_SUITE=10.0.x
     - php: 8.0
       env: TEST_SUITE=PHP_CodeSniffer
     - php: 8.0
       env: TEST_SUITE=10.0.x
+    - php: 8.2
+      env: TEST_SUITE=9.5.x
+    - php: 8.2
+      env: TEST_SUITE=PHP_CodeSniffer
 
 mysql:
   database: og

src/Event/PermissionEvent.php

@@ -242,7 +242,7 @@ public function offsetUnset($key): void {
   /**
    * {@inheritdoc}
    */
-  public function offsetExists($key): bool {
+  public function offsetExists(mixed $key): bool {
     return $this->hasPermission($key);
   }