S6: updated to v2.2.0.3

[bryanlatten]

No description provided.

[adobejmong]

Hi @bryanlatten

Looks good to me: 👍

Notes to self:
The s6 package has a later version: a bug fix 2.10.0.2 skarnet/s6@5e3fcef that is not incorporated in the version included in s6-overlay (which includes 2.10.0.0). Probably not that big of a deal and we'll just wait until s6-overlay picks up a newer version when they do.

Also if picking up 2.10.0.2, skalibs also need to be updated to 2.10.0.2: skarnet/s6@61a6aff

[bryanlatten]

@adobejmong happy to wait it out, though it doesn't seem like new behavior or any introduced fixes, correct?