Draft: Create asimov 0.5.7

What?

This MR provides a bug-fix release.

It contains:

• !133 (merged): Fix a bug with template discovery for pipeline plugins.

Why?

This is designed to create a bugfix release.

Who?

This MR was prepared by @daniel-williams.

Review and Deployment progress

This release has not been reviewed for use in production parameter estimation analyses for GWTC-4 or other collaboration outputs.

• pypi deployment
• conda-forge deployment
• osdf: asimov preview
• sccb: igwn-testing
• sccb: igwn-staging
• sccb: igwn-production