Enable gif support

[almeric]

AWS Serverless Image Handler supports gif since v6.1.0

Could you update this transform to allow format: 'gif' and disable the fallback to png?

See:

craft-imager-x-aws-serverless-transformer/src/transformers/AwsServerless.php

Lines 152 to 164 in 697a587

	if ($format === 'gif') { // If format is `gif`, we have to deal with it...
	if (!empty($settings->autoConvertGif)) {
	if (is_string($settings->autoConvertGif)) {
	$format = $settings->autoConvertGif;
	} else {
	$format = 'png';
	}
	} else {
	$message = 'The AWS Serverless Image Handler does not support converting images to GIF. Please use `autoConvertGif` or add conditionals to avoid passing in GIFs.';
	Craft::error($message, __METHOD__);
	throw new ImagerException($message);
	}
	}

Thanks in advance!