docs(readme): update coverage badge to reflect accurate measurement

Update test coverage badge from red to orange (36.76%) to accurately
reflect current coverage measurement of compiled dist/ JavaScript files.

Coverage measures execution of compiled distribution files rather than
TypeScript sources due to architectural constraints with package.json
exports resolving to dist/. The 36.76% represents actual code coverage
of the library's distributed code.

Total test suite: 5,251 tests passing (5,153 unit + 98 integration)
Type coverage: 97.68%

Author: jdalton

README.md

@@ -2,7 +2,7 @@
 
 [![Socket Badge](https://socket.dev/api/badge/npm/package/@socketsecurity/lib)](https://socket.dev/npm/package/@socketsecurity/lib)
 [![CI](https://github.com/SocketDev/socket-lib/actions/workflows/ci.yml/badge.svg)](https://github.com/SocketDev/socket-lib/actions/workflows/ci.yml)
-![Test Coverage](https://img.shields.io/badge/test--coverage-68.17%25-yellow)
+![Test Coverage](https://img.shields.io/badge/test--coverage-36.76%25-orange)
 ![Type Coverage](https://img.shields.io/badge/type--coverage-97.68%25-brightgreen)
 
 [![Follow @SocketSecurity](https://img.shields.io/twitter/follow/SocketSecurity?style=social)](https://twitter.com/SocketSecurity)