chore(go.mod): update github.com/fergusstrange/embedded-postgres to v1.24.0

[mafredri]

While taking a look at our embedded database configuration, I also noticed that github.com/fergusstrange/embedded-postgres includes the cache path fix: fergusstrange/embedded-postgres#120

This was the main reason to use our fork, AFAICT.

The updated embedded-postgres has new options for specifying postgres settings on start, e.g.

embeddedpostgres.DefaultConfig().
	StartParameters(map[string]string{
		// Defaults, we could adjust depending on memory limits.
		"max_connections": "100",
		"work_mem":        "4MB",
		"shared_buffers":  "128MB",
	})

These could prove useful in the future.

[kylecarbs]

Neat!