Update Version, Fix MySQL container, Update Format of Markdown Files, Change Postgres Version - 13

[jvanderaa]

Fixes #55

• Updates the version of Nautobot to 1.5.4
• Updates the container for MySQL to reference MySQL
• Updates Format of Markdown Files
• Changes Postgres version to 13 to support SCRAM settings on Apple Silicon

[jvanderaa]

@smk4664 can I get a review on this.

[jvanderaa]

@smk4664 approval?

[jvanderaa]

I'm not sure that Stephen's approval would work. @nniehoff can you throw an approval on this?