[docs] add Pro Finding Enhancements documentation

[paulOsinski]

In 2.45.2 , a new feature was added to DefectDojo Pro for estimating a Finding's Priority and Risk based on business context. This PR adds documentation for the feature and updates the changelog to incorporate that.

[dryrunsecurity]

This pull request contains documentation that reveals internal prioritization methodologies and sensitive product metadata, which could potentially provide insights to attackers about the system's assessment strategies and product details.

💭 Unconfirmed Findings (3)

Vulnerability	Information Disclosure Risk
Description	Documentation reveals internal prioritization methodology and provides insights that could potentially assist attackers in understanding system assessment strategies.

Vulnerability	Sensitive Information Exposure
Description	Contains references to sensitive product metadata, including estimated revenue and user record counts, which could be problematic if inappropriately disclosed.

Vulnerability	Potential Access Control Implications
Description	Highlights tiered feature access between standard and Pro versions, indicating differentiated prioritization capabilities across product tiers.

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All finding details can be found in the DryRun Security Dashboard.

[github-actions]

This pull request has conflicts, please resolve those before we can evaluate the pull request.

[github-actions]

Conflicts have been resolved. A maintainer will review the pull request shortly.

[cneill]

Just a couple nits, otherwise good to approve after Matt's comment is resolved

[mtesauro]

Approved