Upgrade to python 3.9

.drone.yml

@@ -4,7 +4,7 @@ type: docker
 
 steps:
   - name: lint
-    image: python:3.8
+    image: python:3.9
     commands:
       - pip install poetry
       - poetry install
@@ -23,7 +23,7 @@ steps:
         from_secret: docker_password
 
   - name: publish
-    image: python:3.8
+    image: python:3.9
     commands:
       - pip install poetry
       - poetry publish --build

poetry.lock

@@ -1680,5 +1680,5 @@ testing = ["big-O", "flake8 (<5)", "jaraco.functools", "jaraco.itertools", "more
 
 [metadata]
 lock-version = "2.0"
-python-versions = "^3.8.1"
-content-hash = "e50c1ea482752c56326890aa403660910ce9517b5eae2f4fd62e26d9a7e74e51"
+python-versions = "^3.9"
+content-hash = "5a75bc7d0a13211f08598f7d1d4a1da8922220d8061a975c1eaa6aecc42defa7"

pyproject.toml

@@ -12,7 +12,7 @@ repository = "https://git.crystalyx.net/Xefir/Divent"
 divent = 'divent.bot:__main__'
 
 [tool.poetry.dependencies]
-python = "^3.8.1"
+python = "^3.9"
 disnake = "^2.8.0"
 ics = "0.8.0.dev0"
 python-dotenv = "^1.0.0"