Ruby/Python/JS/Swift: Add category of Private information to shared sensitive data heuristics

[joefarebrother]

Adds a category of private information to the shared sensitive data heuristics file. This may result in new results for the following queries:

• rb/sensitive-get-query
• py/clear-text-storage-sensitive-data
• py/clear-text-logging-sensitive-data
• py/weak-sensitive-data-hashing
• js/clear-text-stotage-sensitive-data
• js/clear-text-logging