chore: drop Go backend from tests

[DerekRoberts]

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[Copilot]

Pull Request Overview

This PR removes references to the Go backend from our integration test suites and CI/CD pipelines. The changes include removing the integration test file for the fiber backend (which appears to be associated with the Go backend), eliminating the Go-related markdown link in the PR validation workflow, and updating the merge workflow matrix by removing the "fiber" entry that points to a Go backend.

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
integration-tests/src/test_suites/it.backend.fiber.json	Removed the integration tests targeting the Go backend (noting the confusing "fiber" naming)
.github/workflows/pr-validate.yml	Removed the markdown link for the Go backend
.github/workflows/merge.yml	Updated job matrix by removing the "fiber" entry referring to the Go backend

Comments suppressed due to low confidence (2)

integration-tests/src/test_suites/it.backend.fiber.json:1

• [nitpick] The file name and its content indicate 'fiber' while the PR title and context mention dropping the Go backend. Confirm that the 'fiber' naming is appropriate or if it should be clarified to reflect the intended backend being removed.

"api_name": "fiber"

.github/workflows/merge.yml:55

• [nitpick] The matrix originally includes 'fiber' which is removed in this PR, yet the associated baseUrl references a Go backend. Consider reviewing the naming for clarity so that the removed entry clearly represents the dropped Go backend.

name: [quarkus, fiber, fastapi]

[mishraomp]

getting leaner, wohoo