Add 3.13 tag

Signed-off-by: Bernát Gábor <bgabor8@bloomberg.net>

pyproject.toml

@@ -35,6 +35,7 @@ classifiers = [
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: 3.13",
 ]
 dynamic = [
   "version",
@@ -115,6 +116,9 @@ count = true
 quiet-level = 3
 ignore-words-list = "master"
 
+[tool.pyproject-fmt]
+max_supported_python = "3.13"
+
 [tool.coverage]
 html.show_contexts = true
 html.skip_covered = false