Log Message:
ImageMagick: Update to 7.0.11.6

upstream changes:
-----------------
7.0.11-6
  * fix portable Windows build.

7.0.11-5
  * OpenCL will be disable by default, use the environment variable
    MAGICK_OCL_DEVICE to turn it on or select the device to use.
  * eliminate extraneous spaces in AC_PATH_PROG (reference
    https://github.com/ImageMagick/ImageMagick/issues/3428).
  * fix handling of non-square images with -fft option.
  * enable FFTW support with --with-fftw configure script command-line option.

7.0.11-4
  * support caption:split define (reference
    https://github.com/ImageMagick/ImageMagick/discussions/3389).
  * avoid an omp deadlock with policy string

7.0.11-3
  * Eliminate multiple division by zero exceptions (reference
    https://github.com/ImageMagick/ImageMagick/issues/3339 and others).
  * Use -define filename:literal=true to bypass interpretting embedded
    formatting characters and instead use the filename literally.

7.0.11-2
  * decode HEIC images in sRGB instead of YCbCr.
  * Division by zero error is possible if crafty file sets film-gamma property
  * Check for overflow in thumbnail coder
  * Prevent compiler from optimizing out buffer clearing in cipher
  * Clone properties from image stack.
  * Set overall image depth statistic in Composite channel.

7.0.11-1
  * Clone properties from image stack.
  * fix EXR crash (reference
    https://github.com/ImageMagick/ImageMagick/issues/3242).