Update pelago/emogrifier bundle (^6.0.0)

>> files omitted

lib/sabberworm/php-css-parser/src/CSSList/KeyFrame.php

@@ -0,0 +1,104 @@
+<?php
+
+namespace Sabberworm\CSS\CSSList;
+
+use Sabberworm\CSS\OutputFormat;
+use Sabberworm\CSS\Property\AtRule;
+
+class KeyFrame extends CSSList implements AtRule
+{
+    /**
+     * @var string|null
+     */
+    private $vendorKeyFrame;
+
+    /**
+     * @var string|null
+     */
+    private $animationName;
+
+    /**
+     * @param int $iLineNo
+     */
+    public function __construct($iLineNo = 0)
+    {
+        parent::__construct($iLineNo);
+        $this->vendorKeyFrame = null;
+        $this->animationName = null;
+    }
+
+    /**
+     * @param string $vendorKeyFrame
+     */
+    public function setVendorKeyFrame($vendorKeyFrame)
+    {
+        $this->vendorKeyFrame = $vendorKeyFrame;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getVendorKeyFrame()
+    {
+        return $this->vendorKeyFrame;
+    }
+
+    /**
+     * @param string $animationName
+     */
+    public function setAnimationName($animationName)
+    {
+        $this->animationName = $animationName;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getAnimationName()
+    {
+        return $this->animationName;
+    }
+
+    /**
+     * @return string
+     */
+    public function __toString()
+    {
+        return $this->render(new OutputFormat());
+    }
+
+    /**
+     * @return string
+     */
+    public function render(OutputFormat $oOutputFormat)
+    {
+        $sResult = "@{$this->vendorKeyFrame} {$this->animationName}{$oOutputFormat->spaceBeforeOpeningBrace()}{";
+        $sResult .= parent::render($oOutputFormat);
+        $sResult .= '}';
+        return $sResult;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isRootList()
+    {
+        return false;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function atRuleName()
+    {
+        return $this->vendorKeyFrame;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function atRuleArgs()
+    {
+        return $this->animationName;
+    }
+}