

This is a bug-fix release with a couple of important fixes.

* hugolib: Fix bundle header clone logic [0e086785](https://github.com/gohugoio/hugo/commit/0e086785fa4be8086256e9d7de6cda78e18d00ee) [@bep](https://github.com/bep) [#6136](https://github.com/gohugoio/hugo/issues/6136)
* docs: Regenerate CLI docs [02b947ea](https://github.com/gohugoio/hugo/commit/02b947eaa3cc68404180d796a2f7119dce074539) [@bep](https://github.com/bep) 
* commands: Add "hugo config mounts" command [d7c233af](https://github.com/gohugoio/hugo/commit/d7c233afee6a16b1947f60b7e5450e40612997bb) [@bep](https://github.com/bep) [#6144](https://github.com/gohugoio/hugo/issues/6144)
* commands: Cleanup the hugo config command [45ee8a7a](https://github.com/gohugoio/hugo/commit/45ee8a7a52213bf394c7f41a72be78084ddc789a) [@bep](https://github.com/bep) [#6144](https://github.com/gohugoio/hugo/issues/6144)
* Move the mount duplicate filter to the modules package [4b6c5eba](https://github.com/gohugoio/hugo/commit/4b6c5eba306e6e69f3dd07a6c102bfc8040b38c9) [@bep](https://github.com/bep) 
* Allow overlap in module mounts [edf9f0a3](https://github.com/gohugoio/hugo/commit/edf9f0a354e5eaa556f8faed70b5243b7273b35c) [@bep](https://github.com/bep) [#6146](https://github.com/gohugoio/hugo/issues/6146)
* Fix self-mounts on the main project [36220851](https://github.com/gohugoio/hugo/commit/36220851e4ed7fc3fa78aa250d001d5f922210e7) [@bep](https://github.com/bep) [#6143](https://github.com/gohugoio/hugo/issues/6143)




Add release notes for 0.56.3
releaser: Add release notes for 0.56.3
[ci skip]
