fix: remove enr padding #3

	name: Check Bootnodes ENRs

	on:
	pull_request:
	branches:
	- main

	jobs:
	check_padding:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v2

	- name: Install jq
	run: sudo apt-get install jq

	- name: Check bootnodes ENRs have no padding
	run: \|
	for FILE in $(find . -type f $ -name 'bootnodes.yaml' -o -name 'bootstrap_nodes.txt' $); do
	BASE64_STRING=$(grep -Eo '^[[:space:]][- ]["]?([a-zA-Z0-9+/]+={0,2})[[:space:]][- ]["]?' "$FILE")
	while read -r LINE; do
	if [[ $LINE =~ ^[[:space:]][- ]["]?([a-zA-Z0-9+/]+={0,2})[[:space:]][- ]["]?$ ]]; then
	BASE64_STRING="${BASH_REMATCH[1]}"
	PADDING=$(python3 -c "import base64; print('=' in base64.b64decode('$BASE64_STRING').decode())")
	if [ "$PADDING" = "True" ]; then
	echo "Base64 string in $FILE contains padding."
	exit 1
	fi
	fi
	done <<< "$BASE64_STRING"
	done

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