python3-pillow: enable libtiff support

[andreaerdna]

Please enable the libtiff support for python3-pillow module in order to fully handle tiff images.

Currently it seems not enabled:

Traceback (most recent call last):
  File "F:\QGIS\OSGEO4~1.10\qgis\apps\Python39\lib\site-packages\PIL\Image.py", line 432, in _getdecoder
    decoder = getattr(core, decoder_name + "_decoder")
AttributeError: module 'PIL._imaging' has no attribute 'libtiff_decoder'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "F:\QGIS\OSGEO4~1.10\qgis\apps\Python39\lib\code.py", line 90, in runcode
    exec(code, self.locals)
  File "<input>", line 1, in <module>
  File "F:\QGIS\OSGEO4~1.10\qgis\apps\Python39\lib\site-packages\PIL\Image.py", line 2264, in save
    self._ensure_mutable()
  File "F:\QGIS\OSGEO4~1.10\qgis\apps\Python39\lib\site-packages\PIL\Image.py", line 626, in _ensure_mutable
    self._copy()
  File "F:\QGIS\OSGEO4~1.10\qgis\apps\Python39\lib\site-packages\PIL\Image.py", line 619, in _copy
    self.load()
  File "F:\QGIS\OSGEO4~1.10\qgis\apps\Python39\lib\site-packages\PIL\TiffImagePlugin.py", line 1180, in load
    return self._load_libtiff()
  File "F:\QGIS\OSGEO4~1.10\qgis\apps\Python39\lib\site-packages\PIL\TiffImagePlugin.py", line 1249, in _load_libtiff
    decoder = Image._getdecoder(
  File "F:\QGIS\OSGEO4~1.10\qgis\apps\Python39\lib\site-packages\PIL\Image.py", line 434, in _getdecoder
    raise OSError(f"decoder {decoder_name} not available") from e
OSError: decoder libtiff not available

[jef]

fixed in ​https://github.com/jef-n/OSGeo4W/commit/4347578bd652e310c0143a751a9c051c7e141c47