CONTRIBUTING: rebase master to staging without pinging people
CONTRIBUTING: rebase master to staging without pinging people

Co-Authored-By: Martin Weinelt <4e36b6f767c1862ab91c87756280d5dbdc4e9e65@darmstadt.ccc.de>
Co-Authored-By: Janne Heß <05dcf14e3e59a7394ce870525e53515c21cd1966@hess.ooo>

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