flake.*: update to nixos 24.05 and stdecor 0.1.12 #105

# to view logs

Job	Run time
nix	1m 38s
omnilint / omnilint	21s
rust / cargo-build-release	44s
rust / cargo-audit	12s
rust / cargo-check	17s
rust / cargo-deb	1m 42s
rust / cargo-doc	56s
rust / cargo-semver-checks	5s
rust / cargo-test	34s
rust / clippy	28s
rust / rustfmt	5s
rust / rust-misc	5s
rust / publish-github-release	7s
rust / publish-packagecloud (debian/debian/bullseye)	8s
rust / publish-cratesio	10s
rust / publish-packagecloud (debian/debian/bookworm)	10s
rust / publish-packagecloud (ubuntu/ubuntu/jammy)	14s
publish-cachix	1m 41s
	9m 37s

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