Shared dependency prevents related module updates

This is strange. When using a constraint ^1.2 it means the same as >=1.2 <2.0. Is that different for the zero major version? Happy to change that, though, but I'd like to understand the why as well.

Do you want to provide an MR?

Yeah, here is the explanation: https://getcomposer.org/doc/articles/versions.md#caret-version-range-

For pre-1.0 versions it also acts with safety in mind and treats ^0.3 as >=0.3.0 <0.4.0 and ^0.0.3 as >=0.0.3 <0.0.4.

I can throw an MR in a few.

MR is in!

Thank you for the MR and the link to the explanation. Now I get why I got it wrong. Tagging a patch release in a minute.