- update to 1.12 (CVE-2022-1271,bsc#1198062):
  * 'gzip -l' no longer misreports file lengths 4 GiB and larger.
    Previously, 'gzip -l' output the 32-bit value stored in the gzip
    header even though that is the uncompressed length modulo 2**32.
    Now, 'gzip -l' calculates the uncompressed length by decompressing
    the data and counting the resulting bytes.  Although this can take
    much more time, nowadays the correctness pros seem to outweigh the
    performance cons.
  * 'zless' is no longer installed on platforms lacking 'less'.
  * zgrep applied to a crafted file name with two or more newlines
    can no longer overwrite an arbitrary, attacker-selected file.
    [bug introduced in gzip-1.3.10]
  * zgrep now names input file on error instead of mislabeling it as
    "(standard input)", if grep supports the GNU -H and --label options.
  * 'zdiff -C 5' no longer misbehaves by treating '5' as a file name.
  * Configure-time options like --program-prefix now work.
- refresh zdiff.diff, zgrep.diff, zmore.diff

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