v12.16.0

@amirmohammadnajmi

[12.x] Change priority in optimize:clear by @amirmohammadnajmi in #55792
[12.x] Fix TestResponse::assertSessionMissing() when given an array of keys by @crynobone in #55800
[12.x] Allowing Context Attribute to Interact with Hidden by @devajmeireles in #55799
Add support for sending raw (non-encoded) attachments in Resend mail driver by @Roywcm in #55803
[12.x] Added option to always defer for flexible cache by @Zwartpet in #55802
[12.x] style: Use null coalescing assignment (??=) for cleaner code by @mohsenetm in #55823
[12.x] Introducing Arr::hasAll by @devajmeireles in #55815
[12.x] Restore lazy loading check by @decadence in #55817
[12.x] Minor language update by @AhmedAlaa4611 in #55812
fix(cache/redis): use connectionAwareSerialize in RedisStore::putMany() by @superbiche in #55814
[12.x] Fix ResponseFactory should also accept null callback by @crynobone in #55833
[12.x] Add template variables to scope by @wietsewarendorff in #55830
[12.x] Introducing toUri to the Stringable Class by @devajmeireles in #55862
[12.x] Remove remaining @return tags from constructors by @AhmedAlaa4611 in #55858
[12.x] Replace alias is_integer() with is_int() to comply with Laravel Pint by @xurshudyan in #55851
Fix argument types for Illuminate/Database/Query/Builder::upsert() by @jellisii in #55849
[12.x] Add in_array_keys validation rule to check for presence of specified array keys by @stevebauman in #55807
[12.x] Add Rule::contains by @stevebauman in #55809

Provide feedback