fix: RequestValidator to use getRawPath, getRawQuery() and getRawFragment()

[bhaskar16]

Fixes #601

Closes #601

This PR changes the RequestValidator's updatePort() method to use the raw implementations for Path, Query and Fragment which helps in better sanitisation of urls.

Checklist

• I acknowledge that all my contributions will be made under the project's license
• I have made a material change to the repo (functionality, testing, spelling, grammar)
• I have read the Contribution Guidelines and my PR follows them
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• I have added tests that prove my fix is effective or that my feature works
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• I have added inline documentation to the code I modified

[bhaskar16]

@Bazzooka1972 Could you tell me how to ensure that the tests run? I would like to merge this when I can.