fix: don't change input schema during parsing#279

pvdbosch wants to merge 3 commits intoasyncapi:masterasyncapi/openapi-schema-parser:masterfrom

pvdbosch:fix/update-openapi-schema-to-json-schemapvdbosch/openapi-schema-parser:fix/update-openapi-schema-to-json-schemaCopy head branch name to clipboard