:sparkles: update CAPI to 1.8.1

[lubedacht]

What is the purpose of this pull request/Why do we need it?

Updates CAPI version

Description of changes:

• sigs.k8s.io/cluster-api 1.7.4 => 1.8.1
• sigs.k8s.io/cluster-api/test 1.7.4 => 1.8.1
• k8s.io/api 0.29.7 => 0.30.3
• k8s.io/apimachinery 0.29.7 => 0.30.3
• k8s.io/client-go 0.29.7 => 0.30.3
• sigs.k8s.io/controller-runtime 0.17.5 => 0.18.5

Special notes for your reviewer:

Checklist:

• [x] Documentation updated
• [x] E2E Tests updated
• [x] Includes emojis

[lubedacht]

The imports are automatically reordered by GCI. The linter would complain

[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud