ci: bump go to 1.24.7 and fix link checker

[wozniakjan]

Fixing two common issues that happen on all PRs

1) mismatch between expected go version and required go version

number of PRs fail CI checks due to 1.24 version of go being configured in the github workflows which ends up selecting 1.24.3 but go.mod requires 1.24.7.

Run make e2e-test
  make e2e-test
  shell: /usr/bin/bash -e {0}
  env:
    KUBECONFIG: /root/runner/keda-arm64-http-add-on-2/_work/http-add-on/http-add-on/.kube/config
    GOTOOLCHAIN: local
    VERSION: 8208b0494ecd327507c06c13811c3033a9ebe05e
go run -tags e2e ./tests/run-all.go
go: go.mod requires go >= 1.24.7 (running go 1.24.3; GOTOOLCHAIN=local)

make: *** [Makefile:92: e2e-test] Error 1

2) linkinator 429 error

for some reason, linkinator still struggles with getting rate-limited by github. Replacing linkinator with lychee which is capable of handling retries for 429 errors much better.

Error: Detected 1 broken links.
 docs/install.md
   [429] https://github.com/kedacore/charts/blob/master/http-add-on/values.yaml

e.g. https://github.com/kedacore/http-add-on/actions/runs/18491652982/job/52700033142

Checklist

• Commits are signed with Developer Certificate of Origin (DCO)

see also: https://github.com/kedacore/http-add-on/actions/runs/18462756880/job/52685116762?pr=1354

[Copilot]

Pull Request Overview

Updates Go version in GitHub workflow files to resolve CI failures caused by version mismatch between workflow configuration and go.mod requirements.

• Updated Go version specification from "1.24" to "1.24.7" in CI workflows
• Ensures consistency between workflow Go version and go.mod minimum requirement of 1.24.7

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
.github/workflows/tests.yaml	Updated Go version to 1.24.7 for tests workflow
.github/workflows/e2e-tests.yaml	Updated Go version to 1.24.7 for both e2e test jobs

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[Copilot]

Pull Request Overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated no new comments.

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