Bump dependencies and Go version

[matheusfm]

Description

Bump dependencies and Go version:

• Go version from 1.20 to 1.21
• Kubernetes dependencies from v0.28.3 to v0.29.0

How has this been tested?

• Running unit tests, building and running a scan

IMG=marvin make docker-build

trivy image marvin --scanners vuln
2024-03-15T11:13:23.821-0300    INFO    Need to update DB
2024-03-15T11:13:23.821-0300    INFO    DB Repository: ghcr.io/aquasecurity/trivy-db
2024-03-15T11:13:23.821-0300    INFO    Downloading DB...
44.33 MiB / 44.33 MiB [----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------] 100.00% 7.84 MiB p/s 5.9s
2024-03-15T11:13:30.573-0300    INFO    Vulnerability scanning is enabled
2024-03-15T11:13:38.420-0300    INFO    Detected OS: alpine
2024-03-15T11:13:38.420-0300    WARN    This OS version is not on the EOL list: alpine 3.19
2024-03-15T11:13:38.420-0300    INFO    Detecting Alpine vulnerabilities...
2024-03-15T11:13:38.423-0300    INFO    Number of language-specific files: 1
2024-03-15T11:13:38.423-0300    INFO    Detecting gobinary vulnerabilities...

marvin (alpine 3.19.1)

Total: 0 (UNKNOWN: 0, LOW: 0, MEDIUM: 0, HIGH: 0, CRITICAL: 0)

Checklist

• I have labeled this PR with the relevant Type labels
• I have documented my code (if applicable)
• My changes are covered by tests