chore: drop 3.9.21

Author: aignas

python/versions.bzl

@@ -65,21 +65,6 @@ TOOL_VERSIONS = {
         },
         "strip_prefix": "python",
     },
-    "3.9.21": {
-        "url": "20250317/cpython-{python_version}+20250317-{platform}-{build}.tar.gz",
-        "sha256": {
-            "aarch64-apple-darwin": "2a7d83db10c082ce59e9c4b8bd6c5790310198fb759a7c94aceebac1d93676d3",
-            "aarch64-unknown-linux-gnu": "758ebbc4d60b3ca26cf21720232043ad626373fbeb6632122e5db622a1f55465",
-            "ppc64le-unknown-linux-gnu": "3c7c0cc16468659049ac2f843ffba29144dd987869c943b83c2730569b7f57bd",
-            "riscv64-unknown-linux-gnu": "ef1463ad5349419309060854a5f942b0bd7bd0b9245b53980129836187e68ad9",
-            "s390x-unknown-linux-gnu": "e66e52dcbe3e20153e7d5844451bf58a69f41b858348e0f59c547444bfe191ee",
-            "x86_64-apple-darwin": "786ebd91e4dd0920acf60aa3428a627a937342d2455f7eb5e9a491517c32db3d",
-            "x86_64-pc-windows-msvc": "5392cee2ef7cd20b34128384d0b31864fb3c02bdb7a8ae6995cfec621bb657bc",
-            "x86_64-unknown-linux-gnu": "6f426b5494e90701ffa2753e229252e8b3ac61151a09c8cd6c0a649512df8ab2",
-            "x86_64-unknown-linux-musl": "6113c6c5f88d295bb26279b8a49d74126ee12db137854e0d8c3077051a4eddc4",
-        },
-        "strip_prefix": "python",
-    },
     "3.9.23": {
         "url": "20250808/cpython-{python_version}+20250808-{platform}-{build}.tar.gz",
         "sha256": {