www/rustypaste: Update to 0.10.1

PR: 271967
ChangeLog: https://github.com/orhun/rustypaste/releases/tag/v0.10.1

• Added:
  • Add a middleware for checking the content length:
    • Before, the upload size was checked after full upload which was clearly wrong.
    • With this change, total amount of bytes to upload is checked via Content-Length header before the upload.
• Changed:
  • Bump Shuttle to 0.18.0
  • Bump hotwatch to 0.5.0
    • Fixes RUSTSEC-2020-0016
• Fixed:
  • Do not drop the config watcher
    • Since 0.9.0, the configuration watcher was dropped early which caused for it to not work and resulted in mysterious spikes in CPU usage.
    • With this version, this issue is fixed.