Add release dates for 3.9.21, 3.10.16, and 3.11.11

<https://discuss.python.org/t/73214>

Author: jwodder

pyversion-info-data.json

@@ -205,6 +205,7 @@
         "3.9.18": "2023-08-24",
         "3.9.19": "2024-03-19",
         "3.9.20": "2024-09-06",
+        "3.9.21": "2024-12-03",
         "3.10.0": "2021-10-04",
         "3.10.1": "2021-12-06",
         "3.10.2": "2022-01-14",
@@ -221,6 +222,7 @@
         "3.10.13": "2023-08-24",
         "3.10.14": "2024-03-19",
         "3.10.15": "2024-09-07",
+        "3.10.16": "2024-12-03",
         "3.11.0": "2022-10-24",
         "3.11.1": "2022-12-06",
         "3.11.2": "2023-02-08",
@@ -232,6 +234,7 @@
         "3.11.8": "2024-02-06",
         "3.11.9": "2024-04-02",
         "3.11.10": "2024-09-07",
+        "3.11.11": "2024-12-03",
         "3.12.0": "2023-10-02",
         "3.12.1": "2023-12-07",
         "3.12.2": "2024-02-06",

pyversion-info-data.v1.json

@@ -1,5 +1,5 @@
 {
-    "last_modified": "2024-11-11T19:04:53+00:00",
+    "last_modified": "2024-12-04T15:58:23+00:00",
     "cpython": {
         "release_dates": {
             "0.9.0": "1991-02-20",
@@ -207,6 +207,7 @@
             "3.9.18": "2023-08-24",
             "3.9.19": "2024-03-19",
             "3.9.20": "2024-09-06",
+            "3.9.21": "2024-12-03",
             "3.10.0": "2021-10-04",
             "3.10.1": "2021-12-06",
             "3.10.2": "2022-01-14",
@@ -223,6 +224,7 @@
             "3.10.13": "2023-08-24",
             "3.10.14": "2024-03-19",
             "3.10.15": "2024-09-07",
+            "3.10.16": "2024-12-03",
             "3.11.0": "2022-10-24",
             "3.11.1": "2022-12-06",
             "3.11.2": "2023-02-08",
@@ -234,6 +236,7 @@
             "3.11.8": "2024-02-06",
             "3.11.9": "2024-04-02",
             "3.11.10": "2024-09-07",
+            "3.11.11": "2024-12-03",
             "3.12.0": "2023-10-02",
             "3.12.1": "2023-12-07",
             "3.12.2": "2024-02-06",