Remove 3.7 support

Author: Alexander Vasin

.github/workflows/tests.yml

@@ -49,7 +49,6 @@ jobs:
 
       matrix:
         python:
-          - '3.7'
           - '3.8'
           - '3.9'
           - '3.10'

pyproject.toml

@@ -25,7 +25,6 @@ classifiers = [
     "Operating System :: Microsoft",
     "Programming Language :: Python",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.7",
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
@@ -43,7 +42,6 @@ classifiers = [
 aiohttp = ">=3.8,<3.10"
 aiomisc = "^17.3.4"
 aws-request-signer = "1.2.0"
-cached-property = [{ version = '^1.5.2', python = "< 3.8" }]
 typing_extensions = [{ version = '*', python = "< 3.10" }]
 python = "^3.8"