Update tox JSON Schema to 4.52.0 (SchemaStore#5511)

* Update tox JSON Schema to 4.52.0

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: 3 people

src/schemas/json/tox.json

@@ -555,6 +555,20 @@
           ],
           "description": "fallback python interpreter used when no factor or explicit base_python is defined"
         },
+        "base_python_file": {
+          "oneOf": [
+            {
+              "type": "array",
+              "items": {
+                "$ref": "#/definitions/subs"
+              }
+            },
+            {
+              "type": "string"
+            }
+          ],
+          "description": "file(s) containing the Python version to use (e.g. .python-version), first one found wins; used when base_python is not explicitly set and the env name has no Python factor"
+        },
         "base_python": {
           "oneOf": [
             {