fix: python version range

Signed-off-by: heitorlessa <lessa@amazon.co.uk>

Author: heitorlessa

pyproject.toml

@@ -18,7 +18,7 @@ keywords = ["aws_lambda_powertools", "aws", "tracing", "logging", "lambda", "pow
 license = "MIT-0"
 
 [tool.poetry.dependencies]
-python = "^3.8"
+python = ">=3.6"
 aws-xray-sdk = "~=2.5.0"
 fastjsonschema = "~=2.14.4"