v12.21.0

• fix(vite): #55793 add explicit as-script to link tag for script modul… by @midsonlajeanty in #55794
• [12.x] Allow globally disabling Factory parent relationships via Factory::dontExpandRelationshipsByDefault() by @cosmastech in #56154
• [12.x] Adds checking if a value is between two columns by @DarkGhostHunter in #56119
• [12.x] Ensure database connection is always restored by @xurshudyan in #56258
• [12.x] Fix handling of Htmlable objects in Js::convertDataToJavaScriptExpression() by @jj15asmr in #56253
• Reduce meaningless intermediate variables. by @LjjGit in #56265
• [12.x] Improve typehints for AbstractCursorPaginator@through() by @cosmastech in #56267
• Use Date facade instead of time() for password_confirmed_at check by @dylanbr in #56270
• [12.x] fix: Collection::transform() and Paginator::through() return types by @calebdw in #56273
• [12.x] Merge 11.x into 12.x by @u01jmg3 in #56289
• [12.x] Reduce meaningless intermediate variables by @AhmedAlaa4611 in #56288
• [12.x] Refactor build Method to Use Null Coalescing Assignment for Default C… by @Ashot1995 in #56283
• [12.x] minor code formatting improvements by @browner12 in #56296
• [12.x] Use more specific route binding exception message for child routes by @jessekoerhuis in #56298
• [12.x] Fix Possible Undefined Variables by @calfc in #56292
• [12.x] Fix: Ensure scheduler dailyAt() method parses minutes and ignores seconds when seconds are provided by @amirhshokri in #56308
• [12.x] Allows for strict boolean validation by @peterfox in #56313
• Improve SeedCommand console output by @Jehong-Ahn in #56310
• [12.x] Add unified enum support across framework docs by @amirhshokri in #56271
• [12.x] Allows for strict numeric validation by @peterfox in #56328
• [12.x] Update PHPDoc annotations in Validation by @mrvipchien in #56321
• [12.x] Add operator class support for PostgreSQL GiST spatial indexes by @joteejotee in #56324
• Fix multipart array value parsing in HTTP client (#55732) by @joteejotee in #56302
• Fixes bug with ShouldBeUniqueUntilProcessing locks getting stuck due to Middleware by @TWithers in #56318
• [12.x] add prompts based expectations to PendingCommand by @BinaryKitten in #56260
• [12.x] Add Singleton and Scoped attributes to Container by @riasvdv in #56334
• Fix unsetting model castable attribute when cast to object (#56335) by @guram-vashakidze in #56343
• [12.x] Fix/memory improvement by @CharrafiMed in #56345
• [12.x] Add hasMailer method to the mailable class by @kevinb1989 in #56340
• [12.x] Consistent use of mb_split() to split strings into words by @shaedrich in #56338
• [12.x] Add toStringable to Uri by @Kyrch in #56359
• [12.x] Fix PHPStan Integrations by @crynobone in #56369
• Add 'isEmpty' and 'isNotEmpty' to Fluent by @cworreschk in #56370
• [12.x] Add mergeMetadata method to the Mailable class by @kevinb1989 in #56376
• Add 'dontReportUsing' to filter exceptions to be reported by @pelmered in #56361