Adjust Python 3.8 EOL date

<python/devguide@f7ce17f>

Author: jwodder

pyversion-info-data.json

@@ -271,7 +271,7 @@
         "3.5": "2020-09-30",
         "3.6": "2021-12-23",
         "3.7": "2023-06-27",
-        "3.8": "2024-10-01",
+        "3.8": "2024-10-07",
         "3.9": "2025-10-01",
         "3.10": "2026-10-01",
         "3.11": "2027-10-01",

pyversion-info-data.v1.json

@@ -1,5 +1,5 @@
 {
-    "last_modified": "2024-09-28T15:51:37+00:00",
+    "last_modified": "2024-10-07T22:04:17+00:00",
     "cpython": {
         "release_dates": {
             "0.9.0": "1991-02-20",
@@ -273,7 +273,7 @@
             "3.5": "2020-09-30",
             "3.6": "2021-12-23",
             "3.7": "2023-06-27",
-            "3.8": "2024-10-01",
+            "3.8": "2024-10-07",
             "3.9": "2025-10-01",
             "3.10": "2026-10-01",
             "3.11": "2027-10-01",