Downgrade express to version 4.21.2 to fix CVE-2025-13466 vulnerability #1019

	name: cleanup caches by a branch
	on:
	workflow_dispatch:
	inputs:
	pull_request_number:
	description: 'The number of the pull request'
	required: true
	pull_request:
	types:
	- closed

	jobs:
	cleanup:
	runs-on: ubuntu-latest
	steps:
	- name: Check out code
	uses: actions/checkout@v3

	- name: Cleanup
	run: \|
	if [ "${{ github.event_name }}" == "workflow_dispatch" ]; then
	PR_NUMBER="${{ github.event.inputs.pull_request_number }}"
	else
	PR_NUMBER="${{ github.event.pull_request.number }}"
	fi

	REPO=${{ github.repository }}
	BRANCH="refs/pull/$PR_NUMBER/merge"

	echo "Fetching list of cache keys"
	cacheKeysForPR=$(gh cache list -R $REPO -r $BRANCH \| cut -f 1)

	## Setting this to not fail the workflow while deleting cache keys.
	set +e
	echo "Deleting caches..."
	for cacheKey in $cacheKeysForPR
	do
	gh cache delete $cacheKey -R $REPO
	done
	echo "Done"
	env:
	GH_TOKEN: ${{ secrets.CHOREO_BOT_TOKEN }}

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