cert-manager: bump version and increase resource limits

[giorio94]

Description

This PR bumps cert-manager to the latest available version, and increases the resource limits to prevent issues.

Fixes # (issue)

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Please also note any relevant details for your test configuration.

• Deploying the upgraded version in CrownLabs

[kingmakerbot]

Hi @giorio94. Thanks for your PR.

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Make sure this PR appears in the CrownLabs changelog, adding one of the following labels:

• kind/breaking: 💥 Breaking Change
• kind/feature: 🚀 New Feature
• kind/bug: 🐛 Bug Fix
• kind/cleanup: 🧹 Code Refactoring
• kind/docs: 📝 Documentation

[giorio94]

/merge