chore: relax requires-python floor to >= 3.11 (#366)

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: max-parke-scale

pyproject.toml

@@ -56,10 +56,11 @@ dependencies = [
     "opentelemetry-api>=1.20.0",
 ]
 
-requires-python = ">= 3.12,<4"
+requires-python = ">= 3.11,<4"
 classifiers = [
   "Typing :: Typed",
   "Intended Audience :: Developers",
+  "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: 3.13",
   "Programming Language :: Python :: 3.14",