Issue: schema definitions not compliant with json-schema

[bartolomej]

Description

The schemas provided in this repo store reusable definitions in the definitions field:

resume-schema/schema.json

Lines 5 to 11 in 50798e3

	"definitions": {
	"iso8601": {
	"type": "string",
	"description": "Similar to the standard date type, but each section after the year is optional. e.g. 2014-06-29 or 2023-04",
	"pattern": "^([1-2][0-9]{3}-[0-1][0-9]-[0-3][0-9]|[1-2][0-9]{3}-[0-1][0-9]|[1-2][0-9]{3})$"
	}
	},

The official standard specifies $defs field instead, so the format used isn't compatible with that, which breaks usage with json schema compatible tooling: https://json-schema.org/understanding-json-schema/structuring#defs

Solution

Rename "definitions" to "$defs" and update references.