general: migrate appdirs -> platformdirs

appdirs is unmaintained, platformdirs is a compatible replacement

Author: karlicoss

pyproject.toml

@@ -3,7 +3,7 @@
 dynamic = ["version"]  # version is managed by setuptools_scm
 name = "orger"
 dependencies = [
-    "appdirs"     , # to keep state files
+    "platformdirs", # to keep state files
     "atomicwrites", # to safely append data to a file
 ]
 requires-python = ">= 3.9"

src/orger/common.py

@@ -60,9 +60,9 @@ def todo(dt: datetime, **kwargs):
 
 
 def orger_user_dir() -> Path:
-    import appdirs  # type: ignore[import-untyped]
+    import platformdirs
 
-    return Path(appdirs.user_config_dir('orger'))
+    return Path(platformdirs.user_config_dir('orger'))
 
 
 if not TYPE_CHECKING: