FullRegionS3CodeCommitBackup failes when repositories_names are specified

When explicity specifying the names of the repositories you want to backup, all the entries in the array are merged into one string.

cdk-constructs/packages/cdk-codecommit-backup/src/full-region-s3-codecommit-backup.ts

Line 64 in ef86fb3

value: repositoryNames.join(' '),

This string is then used as codecommit repo name:

repository_names = ["repo_name_one", "repo_name_two"]

Running command ./backup_codecommit.sh
--
declare -a repos '[' -z repo_name_one repo_name_two ']'
./backup_codecommit.sh: line 7: [: repo_name_one: binary operator expected repos='repo_name_one repo_name_two' for codecommitrepo in "${repos[@]}"] 
echo '[===== Backup repository: repo_name_one repo_name_two =====]'
[===== Backup repository: repo_name_one repo_name_two =====]
git clone 'https://git-codecommit.eu-west-1.amazonaws.com/v1/repos/repo_name_one repo_name_two'
Cloning into 'repo_name_one repo_name_two'...
fatal: unable to access 'https://git-codecommit.eu-west-1.amazonaws.com/v1/repos/repo_name_one repo_name_two/': The requested URL returned error: 505