chore(deps): update ghcr.io/stalwartlabs/stalwart docker tag to v0.15.2

[renovate]

This PR contains the following updates:

Package	Update	Change
ghcr.io/stalwartlabs/stalwart	minor	v0.14.1-alpine -> v0.15.2-alpine

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Release Notes

stalwartlabs/stalwart (ghcr.io/stalwartlabs/stalwart)

v0.15.2

Compare Source

[0.15.2] - 2025-12-22

If you are upgrading from v0.14.x and below, this version includes multiple breaking changes. Please read the upgrading documentation for more information on how to upgrade from previous versions.
If you are upgrading from v0.15.x, replace the binary and update the webadmin.

Added

• OAuth: Add device authorization endpoint (#​2225).

Changed

• Antispam: Only auto-learn spam from traps or multiple RBL hits.

Fixed

• mySQL search: Use MEDIUMTEXT field type for email body and attachments (#​2544).
• PostgreSQL search: Truncate large text fields.
• ElasticSearch: Implement pagination (#​2551).
• Antispam: Fix NO_SPACE_IN_FROM spam tag detection logic (#​2372).
• IMAP: Fix shared folder double nesting (test suite credits to @​ochnygosch) (#​2358).
• JMAP: Use latest Received header in JMAP Email/import (credits to @​apexskier) (#​2374).
• JMAP: Return unsorted search results when the index is not ready (#​2544).
• LDAP: Lowercase attribute comparison (credits to @​pdf) (#​2363).
• CLI: Fix same-host JMAP redirection on non-standard ports (#​2271).

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v0.15.1

Compare Source

[0.15.1] - 2025-12-17

This version includes multiple breaking changes. Please read the upgrading documentation for more information on how to upgrade from previous versions.

Added

Changed

Fixed

• PostgreSQL: Sanitize search index values (#​2533)
• Elasticsearch: Ignore resource_already_exists_exception errors when creating indexes (#​2535)
• Migrate 0.13.x data (#​2534)

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v0.15.0

Compare Source

[0.15.0] - 2025-12-16

This version includes multiple breaking changes. Please read the upgrading documentation for more information on how to upgrade from previous versions.

Added

• Linear spam classifier using FTRL-Proximal and feature/cuckoo hashing.
• Meilisearch store backend implementation (#​1482).
• PostgreSQL and mySQL native full-text search support.
• Multiple performance improvements and database access optimizations.
• Encryption-at-rest: Spam training privacy setting.
• Enterprise: Undelete e-mail feature now includes From/Subject/Received information.
• IMAP: Implemented new keywords and mailbox attributes described in draft-ietf-mailmaint-messageflag-mailboxattribute-13

Changed

• IMAP: Always return special use flags in responses.

Fixed

• JMAP: FileNode/set fails to delete files (#​2485).
• JMAP: Return error when using blobId in JSContact and JSCalendar (#​2431).
• Directory: Deletion of list or domain issues (#​2415).
• MTA: Headers and body stripped from mail delivery subsystem failure notifications (#​2344).
• MTA: Hooks only run if sieve script, milter or rewrite is configured (#​2317).
• Autodiscover: Endpoint should be case insensitive (#​2440).
• Housekeeper: Panic during DST transition (#​2366).
• Import/Export: Fix import/export utility (#​1882).
• Enterprise: Remove tenant admin permissions when license is invalid.

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