graphviz: upgrade 12.2.0 -> 12.2.1

Changelog:
===========
- Support for building the SWIG-generated R language bindings has been
  integrated into the CMake build system. This is controllable by the
  '-DENABLE_R={AUTO|ON|OFF}' option.
- A sandboxing wrapper, 'dot_sandbox', is now included with Graphviz. Users
  should prefer their platform's native security solutions, but if nothing
  better is available this wrapper offers safe processing of untrusted inputs in
  some scenarios.
- JPEG images without an 'APP0' leading segment are supported for use in 'src'
  fields and friends. Previously Graphviz was overly strict with the types of
  JPEGs it would recognize.
- The GVPR library program 'depath' no longer acts on previously deleted nodes,
  causing unpredictable results.
- Void-typed function parameters ('int foo(void bar)') and variables 'void baz;'
  in GVPR are gracefully rejected.
- Input that induce a set node height but no set node width no longer crash with
  the failure "Assertion failed: '(r->boundary[i] <= r->boundary[NUMDIMS + i])',
  function RTreeInsert". It is typically not obvious to users when their input
  falls into this situation, hence why the assertion message is quoted here.
- Strings containing double quote characters preceded by escape sequences (e.g.
  '\n"') are once again correctly escaped in dot or canonical output.
- 'dot_builtins' no longer lists duplicate format options in its error messages.
- A precision error that resulted in truncated edge lines has been corrected.
  This was a regression in Graphviz 12.0.0.
- The xlib plugin ('-Tx11') resets its initialization state during finalization.

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

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