Simcardems

What's Changed
* Bump version of base image in docker image

**Full Changelog**: https://github.com/ComputationalPhysiology/simcardems/compare/v2023.6.0...v2023.6.1

What's Changed
Add some fixes for running simulations in parallel as well as a workflow for testing a simple use on two processors.

**Full Changelog**: https://github.com/ComputationalPhysiology/simcardems/compare/v2023.5.5...v2023.6.0

- Add script for running convergence tests using pure EP model
- Update post-processing script for computing features. This means that some features are not computed anymore and some features (such as time to peak) is computed in a different way, which does affect the results of the convergence tests.
- Use `PETScDMCollection` to perform interpolation between mechanics and EP mesh and handle resulting memory leak originating from this.

What's Changed
* Add way to run convergence tests use pure ep model in finsberg in https://github.com/ComputationalPhysiology/simcardems/pull/184
* Also adding a way to generate a pdf report with the convergence results


**Full Changelog**: https://github.com/ComputationalPhysiology/simcardems/compare/v2023.4.2...v2023.5.0

First release of Simcardems and version used for [JOSS](https://github.com/openjournals/joss-reviews/issues/4753)