fix: upgrade packaging version (google#3252)

Upgrading to Python 3.12 on my computer seems to have broken the API -
some problem with `packaging.utils.canonicalize_version` using something
that was deprecated.

OSV.dev is still using Python 3.11, so this hasn't been a problem (yet).

Upgrading `packaging` to the newest version seems to fix this. The main
osv library was constraining it to the older version because of google#1270 -
I've just changed it to use `packaging-legacy`, which fixes google#1271 (and
required re-locking every poetry.lock file depending on it).

Author: michaelkedar

gcp/api/poetry.lock

@@ -4,7 +4,7 @@ requires-python = ">=3.11,<4.0"
 dependencies = [
     "google-cloud-ndb==2.3.2",
     "google-cloud-logging==3.11.4",
-    "packaging==20.9",
+    "packaging==24.2",
     "requests==2.32.3",
     "grpcio==1.70.0",
     "grpcio-reflection==1.62.2",