test(parser): Fixed failing tests after zod version bump to 4.0.14

[sdangol]

Summary

This PR bumps the Zod version in the parser package to 4.0.14 and also updates the unit tests to comply with the updated parsing behavior that was introduced by zod.

Changes

Please provide a summary of what's being changed

• Bumped the zod version to 4.0.14
• Updated the test for parsing an invalid Cloudwatch log event to check for invalid base64 cases
• Added another test for parsing an invalid Cloudwatch log event where a valid base64 was passed but contained a malformed JSON structure.

Please add the issue number below, if no issue is present the PR might get blocked and not be reviewed

Issue number: closes #4210

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[dreamorosi]

Thanks for this, can you also bump the zod dependency in the examples/snippets and packages/kafka workspaces? Check if it's used elsewhere with npm ls zod

[sonarqubecloud]

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 SonarQube Cloud

[dreamorosi]

Thank you!