Update xmlsoft/libxml2 to version 2.10.4

Issue created from vulnerability 83124739

Description:

• Severity: medium
• Confidence: unknown
• Location: config/software/libxml2.rb

Identifiers:

• CVE-2023-28484
• CVE-2023-29469

Links:

• https://nvd.nist.gov/vuln/detail/CVE-2023-28484
• https://nvd.nist.gov/vuln/detail/CVE-2023-29469

Scanner:

• Name: GitLab Depscan