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