update default python version to 3.13

Author: parthea

packages/pandas-gbq/noxfile.py

@@ -32,7 +32,17 @@
 ISORT_VERSION = "isort==5.10.1"
 LINT_PATHS = ["docs", "pandas_gbq", "tests", "noxfile.py", "setup.py"]
 
-DEFAULT_PYTHON_VERSION = "3.10"
+ALL_PYTHON = [
+    "3.7",
+    "3.8",
+    "3.9",
+    "3.10",
+    "3.11",
+    "3.12",
+    "3.13",
+]
+
+DEFAULT_PYTHON_VERSION = ALL_PYTHON[-1]
 
 UNIT_TEST_PYTHON_VERSIONS = ["3.9", "3.10", "3.11", "3.12", "3.13"]
 UNIT_TEST_STANDARD_DEPENDENCIES = [