update dcv and validation exception to include dnssec

[tando-nxiweni]

🎯 Summary

Enhanced the Domain Control Validation exception classes to capture and propagate DNSSEC validation details when DNS lookup failures occur. This improvement provides better error diagnostics and debugging capabilities for DNSSEC-related validation failures.

🔑 Key Changes

Exception Enhancements

• DcvException: Added dnssecDetails field and new constructor to support DNSSEC error information
• ValidationException: Added constructor overload to accept and propagate DNSSEC details

Validator Updates

• DnsValidator: Modified to extract and pass DNSSEC details when DNS_LOOKUP_DNSSEC_FAILURE error occurs

Test Coverage

• Added unit test testDnsValidator_validate_dnssec_dnskey_missing() to verify DNSSEC failure handling

📋 Checklist

• Code follows project style guidelines
• Unit tests added/updated
• All tests passing
• JavaDoc documentation updated
• Backward compatibility maintained
• No breaking changes

[Copilot]

Pull request overview

Enhances DNS Domain Control Validation (DCV) error reporting by propagating DNSSEC validation details through DCV/validation exceptions when DNSSEC-related lookup failures occur, improving diagnostics for DNSSEC failures.

Changes:

• Added DnssecDetails propagation support to DcvException / ValidationException via new constructor overloads.
• Updated DnsValidator to extract dnssecDetails from MPIC details when DNS_LOOKUP_DNSSEC_FAILURE is present and include it in thrown ValidationException.
• Added a unit test covering the DNSSEC failure path in DnsValidator.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 4 comments.

File	Description
library/src/main/java/com/digicert/validation/exceptions/DcvException.java	Adds dnssecDetails field and constructor overload to carry DNSSEC diagnostics on DCV exceptions.
library/src/main/java/com/digicert/validation/exceptions/ValidationException.java	Adds constructor overload to pass DNSSEC details through validation exceptions.
library/src/main/java/com/digicert/validation/methods/dns/DnsValidator.java	Extracts DNSSEC details on DNSSEC lookup failures and includes them in thrown ValidationException.
library/src/test/java/com/digicert/validation/methods/dns/DnsValidatorTest.java	Adds a DNSSEC failure-focused test case for DnsValidator.

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