Add pgrls (static analyzer for Postgres Row-Level Security) to Security

[dmitrymaranik]

Adds pgrls — https://github.com/pgrls/pgrls — to the Security section.

pgrls is a static analyzer for Postgres Row-Level Security. It connects to a live database, walks the parsed AST of every policy predicate (via pglast / pg_query), and reports auth bugs, predicate logic flaws, and per-row performance traps. The current release ships 36 lint rules (SEC001–SEC026 for security, PERF001–PERF003 for per-row performance, HYG001–HYG003 for hygiene, VIEW001–VIEW004 for view-mediated bypasses), 10 of which are mechanically auto-fixable via pgrls fix. A pgrls diff command compares two Postgres sources (snapshot files, live databases, or migration-as-input) and classifies every change as SAFE / BREAKING / REQUIRES_REVIEW / DANGEROUS — so CI can fail merges on real security regressions without blocking safe schema migrations.

• License: MIT (OSI-approved)
• Languages: Python (≥3.11) — CLI plus a pytest plugin for RLS isolation tests
• Adoption: ~2.4k PyPI downloads / month, active development (CHANGELOG covers v0.2 → v0.5.45)
• Distribution: PyPI, pre-commit hook (.pre-commit-hooks.yaml in the repo), GitHub Actions / SARIF output

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