Drop support for Python 3.8.

Author: dajiaji

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
     strategy:
       matrix:
         platform: [ubuntu-latest, windows-latest]
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
 
     steps:
     - uses: actions/checkout@v4

pyproject.toml

@@ -25,7 +25,7 @@ exclude = [
 ]
 
 [tool.poetry.dependencies]
-python = "^3.8"
+python = "^3.9"
 asn1crypto = "^1.4.0"
 cbor2 = "^5.4.2"
 certvalidator = "^0.11.1"

tox.ini

@@ -3,14 +3,13 @@ envlist =
     check
     build
     build_docs
-    py{38,39,310,311,312}
+    py{39,310,311,312}
 isolated_build = True
 skip_missing_interpreters = True
 
 
 [gh-actions]
 python =
-    3.8: py38
     3.9: py39
     3.10: check, build, build_docs, py310
     3.11: py311