update reportlab to 4.4.4+ with binary wheels

- Update reportlab from ==3.6.13 to >=4.4.4,<5
- ReportLab 4.4.4+ provides pure Python wheels (no compilation needed)
- Fixes build error: "cannot find ft2build.h" on deployment
- No longer requires system dependencies (libfreetype6-dev, libjpeg-dev)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: jontsai

requirements.txt

@@ -9,7 +9,7 @@ pygeoip>=0.2.6,<1
 python-dateutil>=2.9.0,<3
 python-ulid[pydantic]>=2.4.0,<3
 redis>=4.4.4,<5
-reportlab==3.6.13
+reportlab>=4.4.4,<5
 requests-oauthlib>=1.3.0,<2
 requests>=2.32.4,<3
 rollbar>=0.15.1,<2