Fix code scanning alert - XML external entity expansion

[ctapmex]

Tracking issue for:

• [x] https://github.com/colorer/Colorer-library/security/code-scanning/91
• [x] https://github.com/colorer/Colorer-library/security/code-scanning/90
• [x] https://github.com/colorer/Colorer-library/security/code-scanning/89
• [x] https://github.com/colorer/Colorer-library/security/code-scanning/88
• [x] https://github.com/colorer/Colorer-library/security/code-scanning/87