Remove duplicate organizations and alphabetize data

[mlinksva]

Summary

• remove organizations listed in more than one data category
• retain each organization in its best-fitting category
• alphabetize the civic hacker, government, and research organization lists

Validation

• script/ensure-unique
• YAML parsing for all three changed data files
• git diff --check

[Copilot]

Pull request overview

Removes duplicate organization entries and normalizes alphabetical ordering across organization data.

Changes:

• Retains duplicated organizations only in their best-fitting category.
• Alphabetizes affected organization lists case-insensitively.

Show a summary per file

File	Description
_data/research.yml	Removes duplicates and reorders U.K. research organizations.
_data/governments.yml	Retains moved organizations and alphabetizes U.K. government entries.
_data/civic_hackers.yml	Moves GetDKAN into alphabetical order.

Review details

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• Files reviewed: 3/3 changed files
• Comments generated: 0
• Review effort level: Balanced