Log Message:
vala: update to 0.40.6.

Vala 0.40.6
===========
 * Regression fix:
  - codegen: Avoid critical for array in-parameters with custom length-type
  - tests: Drop assert which is failing on big-endian archs

Vala 0.40.5
===========
 * Various improvements and bug fixes:
  - Warn if --gir is used without --library [#708693]
  - Report an error if rank attribute is required but was not found [#660991]
  - scanner: Accept \R and \N escape sequences in regex literals [#749576]
  - scanner: Accept backreferences \1 through \99 in regex literals [#728574]
  - codegen:
    + Avoid critical in get_basic_type_info() when there is no signature
      [#729517]
    + Fix serializing multidimensional arrays [#735437]
    + Guard get_default_ref_sink_function() against null base-class
    + Respect cname ccode-attribute of lockable fields
    + Fix casting of length for "ref" array parameters
  - codewriter: Add 'new' to symbols if needed to match the original source
    [#614686]
  - girparser: Deal with missing "name" attribute by falling back on \ 
"c:type"
  - girwriter: Drop errornous indent
  - girwriter: Properly output variadic methods and use introspectable="0"
  - genie: Add support for the \v escape character [#664689]
  - genie: Add support for the \uXXXX escape sequence

 * Bindings:
  - glib-2.0: Fix IConv.iconv() [#634753]
  - gobject-2.0: Make constructor of ParamSpecBoxed public
  - gstreamer: Cherry-pick some fixes from 0.42
  - gtk+-3.0: Update to 3.22.30+21fddc39
  - gtk+-4.0: Update to 3.93.0+3a860719
  - javascriptcoregtk-4.0: buffer of String.get_utf8_cstring() is not "ref"
    [#788113]
  - posix: Add missing cname = "int" to Posix.Signal enum
  - sqlite3: Add additional constants for flags of Database.open_v2() [#795627]
  - webkit2gtk-4.0: Cherry-pick some fixes from 0.42