Release v1.2.1-4 to unstable

Signed-off-by: James Valleroy <jvalleroy@mailbox.org>
8 jobs for master in 6 minutes and 9 seconds (queued for 4 seconds)
latest
Status Job ID Name Coverage
  Build
passed #365789
build

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  Test
passed #365794
autopkgtest

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passed #365795
blhc

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passed #365793
lintian

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passed #365796
piuparts

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passed #365792
reprotest

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passed #365791
test-build-all

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passed #365790
test-build-any

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