fix: bundle externalValue with relative reference in examples object

[AlexVarchuk]

What/Why/How?

The bundle command doesn't correctly resolve externalValue with relative reference.

According to specification https://spec.openapis.org/oas/v3.1.0.html#fixed-fields-15 externalValue may contain relative references. Bundle command doesn't resolve it.

Reference

Resolves #919

Testing

openapi.yaml

openapi: 3.1.0
security: []
info:
  version: 1.0.0
  title: Example.com
  termsOfService: https://example.com/terms/
  contact:
    email: [email protected]
    url: http://example.com/contact
  license:
    name: Apache 2.0
    url: http://www.apache.org/licenses/LICENSE-2.0.html
  description: OpenAPI description with external example
components: {}

paths:
  /:
    post:
      summary: Test request externalValue with relative reference in examples
      requestBody: 
        content:
          application/xml:
            schema:
              type: object
            examples:
              mergeRequest:
                summary: Merge request example
                externalValue: './external-value.json'

Screenshots (optional)

Check yourself

• Code changed? - Tested with redoc/reference-docs/workflows (internal)
• All new/updated code is covered with tests
• New package installed? - Tested in different environments (browser/node)

Security

• Security impact of change has been considered
• Code follows company security practices and guidelines

[changeset-bot]

🦋 Changeset detected

Latest commit: 46e1008

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
@redocly/openapi-core	Patch
@redocly/cli	Patch

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[github-actions]

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
redocly lint packages/core/src/benchmark/benches/rebilly.yaml	980.3 ± 10.1	964.3	999.8	1.00
redocly-next lint packages/core/src/benchmark/benches/rebilly.yaml	986.1 ± 22.6	959.2	1034.4	1.01 ± 0.03

[github-actions]

Coverage report

St.❔	Category	Percentage	Covered / Total
🟡	Statements	78.56%	4993/6356
🟡	Branches	67.19%	2062/3069
🟡	Functions	72.98%	824/1129
🟡	Lines	78.85%	4711/5975

Show files with reduced coverage 🔻

St.❔	File	Statements	Branches	Functions	Lines
🟡	core/src/bundle.ts	75.72% (-3.55% 🔻)	65.65% (-4.02% 🔻)	94.44%	75.72% (-3.55% 🔻)

Test suite run success

809 tests passing in 121 suites.

Report generated by 🧪jest coverage report action from 46e1008

[tatomyr]

One small suggestion.

[tatomyr]

@AlexVarchuk also, please check it in Workflows.

[jeremyfiel]

This is for the bundle command but can it also be utilized for the lint command?

My original issue was about linting

[tatomyr]

@jeremyfiel indeed. It needs to be further adjusted to be able to use it in linter, so I'll reopen the issue.