fix: issue when GitHub organization contains more than 30 repos

[KoblerS]

Fixed issue when GitHub organization contains more than 30 repositories. Scaler will now iterate over the pages according to GitHubs documentation.

Checklist

• [x] When introducing a new scaler, I agree with the scaling governance policy
• [x] I have verified that my change is according to the deprecations & breaking changes policy
• [x] Tests have been added
• [x] Changelog has been updated and is aligned with our changelog requirements
• [x] A PR is opened to update our Helm chart (repo) (if applicable, ie. when deployment manifests are modified)
• [x] A PR is opened to update the documentation on (repo) (if applicable)
• [x] Commits are signed with Developer Certificate of Origin (DCO - learn more)

Fixes #

• https://github.com/kedacore/keda/issues/5738

[KoblerS]

@JorTurFer sure will work on it!

[KoblerS]

@KoblerS could you please fix the DCO problem?

could you please check again. Thanks!

[semgrep-app[bot]]

Semgrep found 1 context-todo finding:

• pkg/scalers/github_runner_scaler_test.go
  • L546 - Triage

Consider to use well-defined context

_{Ignore this finding from context-todo.}

[zroubalik]

@KoblerS you can see the failed static check output: https://github.com/kedacore/keda/actions/runs/9127598269/job/25098204457?pr=5746

[KoblerS]

@KoblerS you can see the failed static check output: https://github.com/kedacore/keda/actions/runs/9127598269/job/25098204457?pr=5746

sorry didn't saw it, should be fixed now.

[zroubalik]

/run-e2e github Update: You can check the progress here

[KoblerS]

/run-e2e github Update: You can check the progress here

Any updates when this will be merged?