chore(main): release 4.0.0

[MaxG87]

🤖 I have created a release beep boop

4.0.0 (2026-05-08)

⚠ BREAKING CHANGES

• Names that form absolute paths are rejected to avoid bad surprises when using ButterBackup.
• config: Setting the Compression value for Restic configurations is no longer supported.
• Drop Python 3.10
• Bump minimum supported Python to 3.11

Features

• Add --file-system option to format-device CLI command (442ecc4)
• add optional dest argument to open command (ba7faa6)
• Allow btrfs file system argument for BtrFS-Rsync too (f6ff28c)
• Allow configuration files in YAML, JSON5 and TOML (7a6655d)
• Change default file system for restic to ext4 (6f504c5)
• config: Drop Compression value from Restic configuration (c4ae3a7)
• Continue with othen devices on close unmount confusion (483de4a)
• Enforce certain restrictions on Names (810171c)
• implement --file-system option for format-device command (cdfd75f)
• Open all devices in same directory using their Names as folder names (c368f9a)
• open mounts all devices to shared tmpdir under Name subdirectory with error handling (90c190e)
• Reject names that form absolute Paths (6ebb1e7)

Dependencies

• Bump all dependencies - prod and dev (f6a03b2)
• Bump all production dependencies (eb8f922)
• Bump all production dependencies (b8d1050)
• Bump minimum supported Python to 3.11 (c751d60)
• Bump storage-device-managers to 2.0.0 (1d45b8e)
• Bump to storage-device-managers to Git upstream (32d2f5d)
• dev: Bump all development dependencies (4c54e0d)
• dev: Bump all development dependencies (093f76e)
• Drop Python 3.10 (4437736)

Documentation

• Remove quotes from keys in JSON5 documentation (5502c48)
• Stress expected file ending by renaming example files (9217b1d)

---

This PR was generated with Release Please. See documentation.