update "s6-rc" submodule - carbon-core-system - Integration repository for versioned configuration and software on Carbon

commit 07f4d0aabf1e91f77c90e407777025223fd18db3
parent 7727c14636da1fad6689bb3c68566b419f25b860
Author: ccx <root@dorje.wpr.cz>
Date:   Thu,  2 Sep 2021 17:06:56 +0200

update "s6-rc" submodule

	carbon-core-system Integration repository for versioned configuration and software on Carbon
	git clone https://ccx.te2000.cz/git/carbon-core-system
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