chore: remove Python 3.9

Author: gadomski

.github/workflows/ci.yaml

@@ -11,16 +11,13 @@ jobs:
     strategy:
       matrix:
         python-version:
-          - "3.9"
           - "3.10"
           - "3.11"
           - "3.12"
         os:
           - ubuntu-latest
           - macos-latest
         exclude:  # macos-latest is arm64, which doesn't have these pythons
-          - os: macos-latest
-            python-version: "3.9"
           - os: macos-latest
             python-version: "3.10"
       fail-fast: true

CHANGELOG.md

@@ -6,6 +6,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased]
 
+### Removed
+
+- Python 3.9 ([#224](https://github.com/stac-utils/stac-asset/pull/224))
+
 ## [0.4.3] - 2024-07-29
 
 ### Added

pyproject.toml

@@ -8,14 +8,13 @@ keywords = ["stac", "async"]
 classifiers = [
     "License :: OSI Approved :: Apache Software License",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Development Status :: 4 - Beta",
 ]
 license = { text = "Apache-2.0" }
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 dependencies = [
     "aiofiles>=23.1.0",
     "aiobotocore>=2.5.0",