Bot detection issues cause link checker to fail

[github-actions]

Summary

Status	Count
🔍 Total	251
✅ Successful	225
⏳ Timeouts	0
🔀 Redirected	0
👻 Excluded	20
❓ Unknown	0
🚫 Errors	6

Errors per input

Errors in _posts/2024-05-30-Scaling_part_3.md

• [403] https://kccncna2023.sched.com/event/1R2py/cluster-api-deep-dive-improving-performance-up-to-2k-clusters-fabrizio-pandini-stefan-buringer-vmware | Network error: Forbidden

Errors in _posts/2023-05-17-Scaling_part_2.md

• [ERROR] https://kind.sigs.k8s.io/docs/user/quick-start | Network error: error sending request for url (https://kind.sigs.k8s.io/docs/user/quick-start) Maybe a certificate error?

Errors in _posts/2019-06-25-Metal3.md

• [ERROR] https://itnext.io/deep-dive-to-cluster-api-a0b4e792d57d | Network error: error sending request for url (https://itnext.io/deep-dive-to-cluster-api-a0b4e792d57d) Maybe a certificate error?

Errors in _posts/2019-12-04-Introducing_metal3_kubernetes_native_bare_metal_host_management.md

• [403] https://static.sched.com/hosted_files/kccncna19/b3/Introducing%20Metal3%20KubeCon%20NA%202019.pdf | Network error: Forbidden

Errors in _posts/2019-11-07-Kubernetes-native_Infrastructure-Managed_Baremetal_with_Kubernetes_Operators_and_OpenStack_Ironic.md

• [403] https://openinfradays.sched.com/event/KMyE | Network error: Forbidden

Errors in _posts/2024-04-10-Metal3_at_KubeCon_EU_2024.md

• [403] https://kccnceu2024.sched.com/event/1YheY | Network error: Forbidden
  Full Github Actions output

[tuminoid]

/retitle Bot detection issues cause link checker to fail
/assign @peppi-lotta

Would you take a look at these? These are all working, but the bot is failing with various reasons. Some of them are maybe due IP blacklisting, some of them are just bot detection issues.
/triage accepted