Check if PEM bundle is valid after downloading

[reiniercriel]

Summary by Aikido

⚠️ Security Issues: 1	Quality Issues: 0	✅ Resolved Issues: 1

🚀 New Features

• Introduced ReadAndValidatePEMBundle utility to validate PEM bundles on disk

⚡ Enhancements

• Validated and removed downloaded proxy CA files when invalid

🔧 Refactors

• Refactored certbundle to delegate PEM parsing to utils package

^{More info}

[aikido-pr-checks]

Potential file inclusion attack via reading file - high severity
If an attacker can control the input leading into the ReadFile function, they might be able to read sensitive files and launch further attacks with that information.

Show fix

Remediation: Ignore this issue only after you've verified or sanitized the input going into this function.

_{Reply @AikidoSec ignore: [REASON] to ignore this issue.
More info}