Filter by github results InvalidVersion

Containerd use the same repository for releases of it's gRPC API (which
we are not interested in).
Conveniently, those releases have tags which are not valid version
number (being prefixed with 'api/').

This could also be potentially useful for similar cases.
The risk of missing releases because of this are low, since it would
require that a project issue a new release with an invalid format, then
switch back to the previous format (or we miss the fact it's not
updating for a long period of time).

scripts/download_hash.py

@@ -13,7 +13,9 @@ from functools import cache
 import argparse
 import requests
 from ruamel.yaml import YAML
-from packaging.version import Version
+from packaging.version import Version, InvalidVersion
+
+from typing import Optional
 
 CHECKSUMS_YML = "../roles/kubespray-defaults/defaults/main/checksums.yml"
 
@@ -171,11 +173,18 @@ def download_hash(only_downloads: [str]) -> None:
                               }
                           )
     response.raise_for_status()
+    def valid_version(possible_version: str) -> Optional[Version]:
+        try:
+            return Version(possible_version)
+        except InvalidVersion:
+            return None
+
     github_versions = dict(zip([k + '_checksums' for k in downloads.keys()],
                                 [
-                                    {r["tagName"] for r in repo["releases"]["nodes"]
-                                     if not r["isPrerelease"] # and r["releaseAssets"]["totalCount"] > 2
-                                                              # instead here we need optionnal custom predicate per-component to filter out
+                                    {
+                                        v for r in repo["releases"]["nodes"]
+                                        if not r["isPrerelease"]
+                                           and (v := valid_version(r["tagName"])) is not None
                                      }
                                     for repo in response.json()["data"]["with_releases"]
                                     ],