Update changelog for 5.16.4-1 release

10 jobs for debian/5.16.4-1 in 11 minutes and 26 seconds (queued for 1 second)
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Status Job ID Name Coverage
  Build
passed #262567
build

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  Test
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autopkgtest

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blhc

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lintian

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missing-breaks

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piuparts

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rc-bugs

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reprotest

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test-build-all

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passed #262568
test-build-any

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