Do index updates via GitHub actions

.github/workflows/update-index.yaml

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+name: Update Index
+
+# Only allow one workflow run per branch at a time.
+# When one is already running, new runs will be pending.
+# https://github.blog/changelog/2021-04-19-github-actions-limit-workflow-run-or-job-concurrency/
+concurrency:
+  group: index-update-${{ github.ref }}
+  # Do not use cancel-in-progress! Or we might create a scenario where all workflows get canceled before they complete.
+
+on:
+  # every 5 minutes. Increase time if workflows are overlapping.
+  schedule:
+    - cron:  '*/5 * * * *'
+  # manual rebuilds by TSC members
+  workflow_dispatch:
+
+jobs:
+  update_index:
+    name: 'Update Index'
+    uses: StackStorm-Exchange/ci/.github/workflows/index-update.yaml@master

v1/exclude_packs.txt

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+# Any packs in this file are excluded from the index.
+#
+# Each line is a pack name and should be part of the pack's repo name:
+#   StackStorm-Exchange/stackstorm-<pack name here>
+# So, the "foo_bar" pack would be in this repo:
+#   StackStorm-Exchange/stackstorm-foo_bar
+#
+# Comment lines begin with "#"
+
+# utility packs
+test
+test2
+test-content-version
+
+# These packs are NOT excluded. CI uses them to test using the index.
+#python3_test