🔥 Update pyproject.toml, python 3.7 and above

Author: mirecl

pyproject.toml

@@ -10,7 +10,6 @@ classifiers = [
     "License :: OSI Approved :: MIT License",
     "Operating System :: OS Independent",
     "Programming Language :: Python",
-    "Programming Language :: Python :: 3.6",
     "Programming Language :: Python :: 3.7",
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
@@ -23,7 +22,7 @@ Homepage = "https://github.com/mirecl/pprof"
 Documentation = "https://github.com/mirecl/pprof"
 
 [tool.poetry.dependencies]
-python = ">=3.6.2,<4.0"
+python = ">=3.7,<4.0"
 line-profiler = "^4.0.3"
 
 [tool.poetry.dev-dependencies]