Transmission 4.0.4 release

Hello all,
releases this as the new 4.0.4 version of transmission is available.
A few other fixes are included as well, please see the commit log.
Any comments related to the release please feel free to add
please wait a while until the docker builds are completed and pushed

What's Changed

• Strip double quotes from umask check by @pkishino in #2632
• Update supported-providers.md by @developersteve in #2640
• Updated provider docs docs to include tip to use service credentials for NordVPN by @limxingzhi in #2637
• Update main to dev by @pkishino in #2689

New Contributors

• @developersteve made their first contribution in #2640
• @limxingzhi made their first contribution in #2637

Full Changelog: v5.0.2...v5.1.0