Log Message:
vala: update to 0.48.3.

Vala 0.48.3
===========
 * Various improvements and bug fixes:
  - codegen:
    + Append initializer for "_*_size_" of array field in internal struct
    + Avoid critical trying to serialize an unsupported type to Variant [#952]
    + Don't free value if property setter takes ownership [#953]
    + Correct field declaration for captured inline-allocated array [#954]
    + Include "glib.h" for G_BEGIN_DECLS/G_END_DECLS usage
    + Correctly handle transformation of translated string-literal constants
    + Don't pass CCodeCastExpression to NULL-aware free macro [#953]
  - vala:
    + Support struct initializer list in non-constant array [#949]
    + Handle unlock() statement in CodeWriter
    + Handle all ctors and dtors in CodeWriter
    + Consider boolean types are compatible with each other
    + Parse standalone integer/real literals as expression statement [#961]
    + Warn about usage of override to implement abstract interface methods

 * Bindings:
  - gio-2.0: Update to 2.65.0~a136776e
  - gstreamer: Update from 1.17.0+ git master
  - gtk4: Update to 3.98.2+11495027