smarty: upgrade 5.8.3 -> 5.8.4

Changelog:
============
- Fixed a 'TypeError' on PHP 8 when 'Security::$static_classes' was set to a
  non-array value (e.g. the string ''none'') to disable static class access;
  any non-array value now cleanly denies access. Use 'Security::$static_classes =
  null' to disable access to all static classes.
- Security: the built-in 'stream:' resource type now validates the nested
  stream wrapper against the security policy, so a template such as
  'stream:php://filter/...' can no longer bypass 'Security::$streams' (including
  'Security::$streams = null') to read local files

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>

meta-oe/recipes-support/smarty/smarty_5.8.4.bb

@@ -12,7 +12,7 @@ LIC_FILES_CHKSUM = "file://LICENSE;md5=2c0f216b2120ffc367e20f2b56df51b3"
 
 SRC_URI = "git://github.com/smarty-php/smarty.git;protocol=https;branch=master;tag=v${PV}"
 
-SRCREV = "042dff64a912c272e7692a442590880a3388c4b9"
+SRCREV = "94a27cbbc7820198d7adc17a2be8d457fb267753"
 
 
 INHIBIT_DEFAULT_DEPS = "1"