Missing compressible on `application/yaml` mime type

[styfle]

The text/yaml mime type is compressible already

mime-db/db.json

Lines 9017 to 9020 in 80b4e6e

	"text/yaml": {
	"compressible": true,
	"extensions": ["yaml","yml"]
	},

But the recently added application/yaml is missing compressible

mime-db/db.json

Lines 7069 to 7071 in 80b4e6e

	"application/yaml": {
	"source": "iana"
	},