docs: pin to tagged version in examples

[mammothb]

While there has been a prior PR trying to update the README examples to pin to a tagged version following the recommendations given. I believe that with the way it's written, it's still pointing to a branch instead of an actual tagged version.

I have updated the examples to pin to an actual tagged version v1.4.2 so that the examples can be used as is without things breaking and still following the recommendations

[webknjaz]

Thanks for thinking about this but unfortunately this does not fully align with the maintenance considerations I currently have. Sadly, I'll have to reject your PR. Sorry :(

I've specifically used a release-named branch because I didn't want a traveling tag @v1 as GitHub show-cases everywhere. But this branch is stable and follows SemVer so there will be no intentional breaking changes (which may be untrue for the default repo branch). I prefer not to have to maintain updating those pins in the readme because I think that the warning notes are enough and people copying the snippet from the marketplace page would get the corresponding tag baked-in by default.