feat: remove Python3.7 support

Author: texastony

Diff for: .github/workflows/ci_tests.yaml

@@ -25,7 +25,6 @@ jobs:
           - os: macos-latest
             architecture: x64
         python:
-          - 3.7
           - 3.8
           - 3.9
           - "3.10"

Diff for: README.rst

@@ -47,7 +47,7 @@ Getting Started
 Required Prerequisites
 ======================
 
-* Python 3.7+
+* Python 3.8+
 
 
 Installation

Diff for: buildspec.yml

@@ -3,10 +3,6 @@ version: 0.2
 batch:
   fast-fail: false
   build-list:
-    - identifier: python3_7
-      buildspec: codebuild/python3.7.yml
-      env:
-        image: aws/codebuild/standard:5.0
     - identifier: python3_8
       buildspec: codebuild/python3.8.yml
       env:

Diff for: setup.py

@@ -48,11 +48,11 @@ def get_requirements():
         "License :: OSI Approved :: Apache Software License",
         "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",
         "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
         "Programming Language :: Python :: Implementation :: CPython",
         "Topic :: Security",
         "Topic :: Security :: Cryptography",

Diff for: tox.ini

@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py{37,38,39,310,311,312}-{local,integ,ddb,examples}-fast,
+    py{38,39,310,311,312}-{local,integ,ddb,examples}-fast,
     nocmk, sourcebuildcheck,
     docs, bandit, doc8, readme,
     flake8{,-tests,-examples}, pylint{,-tests,-examples},