ci: run snapshot bot on vcr branch and upload cassettes as artifacts

Author: G-Rath

.github/workflows/snapshots.yml

@@ -4,6 +4,9 @@ on:
   schedule:
     - cron: "47 12 * * *"
   workflow_dispatch:
+  push:
+    branches:
+      - test/vcr
 concurrency:
   # Pushing new changes to a branch will cancel any in-progress CI runs
   group: ${{ github.workflow }}-${{ github.ref }}
@@ -33,6 +36,11 @@ jobs:
           TEST_ACCEPTANCE: true
           TEST_VCR_MODE: recordonly
           UPDATE_SNAPS: always
+      - uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
+        with:
+          name: vcr-testdata-${{ github.run_number }}-${{ github.run_attempt }}
+          path: cmd/osv-scanner/**/testdata/cassettes/*.yaml
+          retention-days: 1
       - uses: peter-evans/create-pull-request@271a8d0340265f705b14b6d32b9829c1cb33d45e # v7.0.8
         with:
           token: ${{ secrets.PR_TOKEN_BOT }}