lang/php80: update to 8.0.12

This is a security fix release.

21 Oct 2021, PHP 8.0.12

- CLI:
  . Fixed bug #81496 (Server logs incorrect request method). (lauri)

- Core:
  . Fixed bug #81435 (Observer current_observed_frame may point to an old
    (overwritten) frame). (Bob)
  . Fixed bug #81380 (Observer may not be initialized properly). (krakjoe)

- DOM:
  . Fixed bug #81433 (DOMElement::setIdAttribute() called twice may remove ID).
    (Viktor Volkov)

- FFI:
  . Fixed bug #79576 ("TYPE *" shows unhelpful message when type is not
    defined). (Dmitry)

- FPM:
  . Fixed bug #81026 (PHP-FPM oob R/W in root process leading to privilege
    escalation) (CVE-2021-21703). (Jakub Zelenka)

- Fileinfo:
  . Fixed bug #78987 (High memory usage during encoding detection). (Anatol)

- Filter:
  . Fixed bug #61700 (FILTER_FLAG_IPV6/FILTER_FLAG_NO_PRIV|RES_RANGE failing).
    (cmb, Nikita)

- Opcache:
  . Fixed bug #81472 (Cannot support large linux major/minor device number when
    read /proc/self/maps). (Lin Yang)

- Reflection:
  . ReflectionAttribute is no longer final. (sasezaki)

- SPL:
  . Fixed bug #80663 (Recursive SplFixedArray::setSize() may cause double-free).
    (cmb, Nikita, Tyson Andre)
  . Fixed bug #81477 (LimitIterator + SplFileObject regression in 8.0.1). (cmb)

- Standard:
  . Fixed bug #69751 (Change Error message of sprintf/printf for missing/typo
    position specifier). (Aliaksandr Bystry)

- Streams:
  . Fixed bug #81475 (stream_isatty emits warning with attached stream wrapper).
    (cmb)

- XML:
  . Fixed bug #70962 (XML_OPTION_SKIP_WHITE strips embedded whitespace).
    (Aliaksandr Bystry, cmb)

- Zip:
  . Fixed bug #81490 (ZipArchive::extractTo() may leak memory). (cmb, Remi)
  . Fixed bug #77978 (Dirname ending in colon unzips to wrong dir). (cmb)

(taca)