TagBot fails to release new tag

Somehow I’m unable to release new tags with TagBot for GitHub - Tortar/DynamicSampling.jl: Sampling methods for dynamic discrete distributions, it says

Processing version v0.4.0 (b10d487513b8a1c4a878494f716cae3e85c5607e)

Generating changelog for version v0.4.0 (b10d487513b8a1c4a878494f716cae3e85c5607e)

git@github.com: Permission denied (publickey).

fatal: Could not read from remote repository.

Please make sure you have the correct access rights

and the repository exists.

at e.g. TagBot trigger issue · Tortar/DynamicSampling.jl@b10d487 · GitHub. As far as I can tell I have all the correct setup in place described at Julia TagBot · Actions · GitHub Marketplace · GitHub. Did someone experience similar problems or knows how to resolve?