Log Message:
vala: update to 0.48.5.

Vala 0.48.5
===========
 * Regression and bug fixes:
  - Revert "vala: Set default_construction_method in semantic-analyzer check
    if required" [#982]
  - tests: Fix make dist

Vala 0.48.4
===========
 * Various improvements and bug fixes:
  - codegen:
    + Fix binary 'in' operator on array with boxed value-typed needle [#951]
    + Use get_value_*_function() in GSignalModule.generate_marshaller() [#468]
    + Correctly handle signals returning real non-nullable struct [#466]
    + Use specified indices to access multidimensional array constants [#905]
    + Fix base-access to non-abstract/non-virtual properties [#204]
    + Fix default of CCode.pos for parameters in async methods
  - vala:
    + Set default_construction_method in semantic-analyzer check if required
    + Fix cleaning of output in CodeContext.pkg_config_modversion()
    + Don't use possibly uninitialized backing field of package_name [#971]
    + Add SourceReference.contains() and SourceLocation.to_string()
    + Check assigned handler of dynamic signal before proceeding further
    + Don't perform version check on internal lambda method
    + Perform version check for types of non-external variable declarations
    + Quote symbol on report by version attribute check
    + Ensure non-empty argument list for "disconnect" before accessing it
  - girparser
    + Move special handling for certain parameters to process_callable()
    + Drop special handling of GLib.Data, GLib.PtrArray and GLib.String
    + Improve detection of AsyncReadyCallback/AsyncResult parameters [#340]
  - parser: Handle incomplete expression statements

 * Bindings:
  - gio-2.0: Add "async_result_pos" attributes to \ 
*.call_with_unix_fd_list()
    [#340]
  - glib-2.0: Fix Filename.canonicalize() binding of g_canonicalize_filename
  - glib-2.0: Guard Pid.to_string() with GLIB_2_50 to deal with G_PID_FORMAT
  - gstreamer-app-1.0: Don't merge Src.push_buffer_*() signal with its method
    [#968]
  - gstreamer-1.0: Don't skip GST_*_FORMAT strings [#970]
  - gtk4: Update to 3.98.3
  - vapi: Update GIR-based bindings