Update Mpdf

Fully 8.5 compliant version was just released.

composer.lock

@@ -1276,16 +1276,16 @@
         },
         {
             "name": "mpdf/mpdf",
-            "version": "v8.2.6",
+            "version": "v8.2.7",
             "source": {
                 "type": "git",
                 "url": "https://github.com/mpdf/mpdf.git",
-                "reference": "dd30e3b01061cf8dfe65e7041ab4cc46d8ebdd44"
+                "reference": "b59670a09498689c33ce639bac8f5ba26721dab3"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/mpdf/mpdf/zipball/dd30e3b01061cf8dfe65e7041ab4cc46d8ebdd44",
-                "reference": "dd30e3b01061cf8dfe65e7041ab4cc46d8ebdd44",
+                "url": "https://api.github.com/repos/mpdf/mpdf/zipball/b59670a09498689c33ce639bac8f5ba26721dab3",
+                "reference": "b59670a09498689c33ce639bac8f5ba26721dab3",
                 "shasum": ""
             },
             "require": {
@@ -1353,7 +1353,7 @@
                     "type": "custom"
                 }
             ],
-            "time": "2025-08-18T08:51:51+00:00"
+            "time": "2025-12-01T10:18:02+00:00"
         },
         {
             "name": "mpdf/psr-http-message-shim",

src/PhpSpreadsheet/Writer/Pdf/Mpdf.php

@@ -40,13 +40,6 @@ class Mpdf extends Pdf
 
         //  Create PDF
         $config = ['tempDir' => $this->tempDir . '/mpdf'];
-        $restoreHandler = false;
-        if (PHP_VERSION_ID >= self::$temporaryVersionCheck) {
-            // @codeCoverageIgnoreStart
-            set_error_handler(self::specialErrorHandler(...));
-            $restoreHandler = true;
-            // @codeCoverageIgnoreEnd
-        }
         $pdf = $this->createExternalWriterInstance($config);
         $ortmp = $orientation;
         $pdf->_setPageSize($paperSize, $ortmp);
@@ -90,30 +83,9 @@ class Mpdf extends Pdf
         $str = $pdf->Output('', 'S');
         fwrite($fileHandle, $str);
 
-        if ($restoreHandler) {
-            restore_error_handler(); // @codeCoverageIgnore
-        }
         parent::restoreStateAfterSave();
     }
 
-    protected static int $temporaryVersionCheck = 80500;
-
-    /**
-     * Temporary handler for Php8.5 waiting for Dompdf release.
-     *
-     * @codeCoverageIgnore
-     */
-    public function specialErrorHandler(int $errno, string $errstr, string $filename, int $lineno): bool
-    {
-        if ($errno === E_DEPRECATED) {
-            if (preg_match('/Providing an empty string is deprecated/', $errstr) === 1) {
-                return true;
-            }
-        }
-
-        return false; // continue error handling
-    }
-
     /**
      * Convert inches to mm.
      */