Update pyproject for 0.5.0 release

Author: jgraham

python/pyproject.toml

@@ -8,7 +8,7 @@ description = "Download log files from Taskcluster CI systems"
 author = "James Graham"
 author_email = "[email protected]"
 license = "BSD-3-Clause"
-version = "0.4.1"
+version = "0.5.0"
 requires-python = ">=3.7"
 classifiers = [
     "Programming Language :: Rust",