This update for php7-imagick fixes the following issues:

Upgrade to version 3.4.4:

Added:

* function Imagick::optimizeImageTransparency()
* METRIC_STRUCTURAL_SIMILARITY_ERROR
* METRIC_STRUCTURAL_DISSIMILARITY_ERROR
* COMPRESSION_ZSTD - https://github.com/facebook/zstd
* COMPRESSION_WEBP
* CHANNEL_COMPOSITE_MASK
* FILTER_CUBIC_SPLINE - "Define the lobes with the -define
filter:lobes={2,3,4}
(reference https://imagemagick.org/discourse-server/viewtopic.php?f=2&t=32506)."
* Imagick now explicitly conflicts with the Gmagick extension.

Fixes:

* Correct version check to make RemoveAlphaChannel and FlattenAlphaChannel
be available when using Imagick with ImageMagick version 6.7.8-x
* Bug 77128 - Imagick::setImageInterpolateMethod() not available on Windows
* Prevent memory leak when ImagickPixel::__construct called after object instantiation.
* Prevent segfault when ImagickPixel internal constructor not called.
* Imagick::setResourceLimit support for values larger than 2GB (2^31) on 32bit platforms.
* Corrected memory overwrite in Imagick::colorDecisionListImage()
* Bug 77791 - ImagickKernel::fromMatrix() out of bounds write.
Fixes CVE-2019-11037, boo#1135418

The following functions have been deprecated:

* ImagickDraw, matte
* Imagick::averageimages
* Imagick::colorfloodfillimage
* Imagick::filter
* Imagick::flattenimages
* Imagick::getimageattribute
* Imagick::getimagechannelextrema
* Imagick::getimageclipmask
* Imagick::getimageextrema
* Imagick::getimageindex
* Imagick::getimagematte
* Imagick::getimagemattecolor
* Imagick::getimagesize
* Imagick::mapimage
* Imagick::mattefloodfillimage
* Imagick::medianfilterimage
* Imagick::mosaicimages
* Imagick::orderedposterizeimage
* Imagick::paintfloodfillimage
* Imagick::paintopaqueimage
* Imagick::painttransparentimage
* Imagick::radialblurimage
* Imagick::recolorimage
* Imagick::reducenoiseimage
* Imagick::roundcornersimage
* Imagick::roundcorners
* Imagick::setimageattribute
* Imagick::setimagebias
* Imagick::setimageclipmask
* Imagick::setimageindex
* Imagick::setimagemattecolor
* Imagick::setimagebiasquantum
* Imagick::setimageopacity
* Imagick::transformimage