Compare changes URL is broken for Bitbucket repos

[JaZo]

Environment

Package version: v0.5.7
Node: v22.12.0

Reproduction

1. open a bitbucket repo;
2. release a new version: npx --yes changelogen@latest --release;
3. try to visit the "compare changes" link in the markdown;
4. see it's broken.

Describe the bug

The "compare changes" link for Bitbucket repos is broken. It uses ... as a separator for the versions, like GitHub, but it should be %0D for Bitbucket. See https://bitbucket.org/tutorials/tutorials.git.bitbucket.org/branches/compare/future-branch%0Dmaster as an example.

I'll open a PR with a fix!

Additional context

No response

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