jsc#PED-6641
The following patches are dropped because the CVEs are fixed in version upgrades
tiff-CVE-2018-18557.patch
tiff-CVE-2018-18661.patch
tiff-CVE-2019-14973.patch
tiff-CVE-2019-17546.patch
tiff-CVE-2020-19131.patch
tiff-CVE-2020-35521,CVE-2020-35522.patch
tiff-CVE-2020-35523.patch
tiff-CVE-2020-35524.patch
tiff-CVE-2022-0561,CVE-2022-34266.patch
tiff-CVE-2022-22844.patch
The CVE names are mentioned in the corrsponding version upgrades changelog.

- Update to version 4.6.0:
  * API/ABI breaks: none
  * WebP decoder: validate WebP blob width, height, band count against
    TIFF parameters to avoid use of uninitialized variable, or decoding
    corrupted content without explicit error (fixes issue #581, issue #582).
  * WebP codec: turn exact mode when creating lossless files to avoid
    altering R,G,B values in areas where alpha=0 
  * Fix TransferFunction writing of only two transfer functions.
  * TIFFReadDirectoryCheckOrder: avoid integer overflow. When it occurs,
    it should be harmless in practice though 
  * tiffcp: remove -i option (ignore errors)
  * This version removes a big number of utilities that have suffered from
    lack of maintenance over the years and were the source of various
    reported security issues:
    + fax2ps
    + fax2tiff
    + pal2rgb
    + ppm2tiff
    + raw2tiff
    + rgb2ycbcr
    + thumbnail
    + tiff2bw
    + tiff2rgba
    + tiffcmp
    + tiffcrop
    + tiffdither
    + tiffgt
    + tiffmedian
    + tiff2ps
    + tiff2pdf

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