"File not found" errors with Ruby 3.2.x

[morgant]

I'm currently testing wayback_machine_downloader under OpenBSD amd64/7.5-stable and ruby 3.2.4. When attempting to download a single page, for example:

 $ ./bin/wayback_machine_downloader "http://www.folklore.org/ProjectView.py?name=Newton" --to 20120222134837 -l Getting snapshot pages~/Projects/wayback-machine-downloader/lib/wayback_machine_downloader/archive_api.rb:8:in `initialize': No such file or directory @ rb_sysopen - http://web.archive.org/cdx/search/xd?url=http://www.folklore.org/ProjectView.py?name=Newton&fl=timestamp,original&collapse=digest&gzip=false&filter=statuscode:200&to=20120222134837 (Errno::ENOENT)
       from ~/Projects/wayback-machine-downloader/lib/wayback_machine_downloader/archive_api.rb:8:in `open'
       from ~/Projects/wayback-machine-downloader/lib/wayback_machine_downloader/archive_api.rb:8:in `get_raw_list_from_api'
       from ~/Projects/wayback-machine-downloader/lib/wayback_machine_downloader.rb:88:in `get_all_snapshots_to_consider'
       from ~/Projects/wayback-machine-downloader/lib/wayback_machine_downloader.rb:105:in `get_file_list_curated'
       from ~/Projects/wayback-machine-downloader/lib/wayback_machine_downloader.rb:168:in `get_file_list_by_timestamp'
       from ~/Projects/wayback-machine-downloader/lib/wayback_machine_downloader.rb:179:in `list_files'
       from ./bin/wayback_machine_downloader:70:in `<main>'

This is because open-uri used to replace Kernel#open, but that's a security nightmare and so that functionality was deprecated and finally removed sometime in ruby 3.x. So, uses of open() which fetch URLs should be replaced with URI.open().