Vala 0.47.92
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 * Various improvements and bug fixes:
  - Add support for sealed classes in bindings [#278]
  - codegen: Don't initialize stack-allocated array with local-constant
    length [#910]
  - vala: Improve robustness of analyzer pass for language-servers [#911]
  - vala: Add local-variables to current scope regardless its error state
  - testrunner: Pass G_DEBUG=fatal-warnings to invalid test

 * Bindings:
  - Add some fundamental deps files to improve --nostdpkg support [#911]