Log Message:
gobject-introspection: update to 1.78.1.

1.78.1 - 2023-09-16
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* Avoid undefined behaviour in the Regress test suite [#458]

1.78.0 - 2023-09-08
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* Update the GIR data for GLib, GObject, and GIO
* Add GObject as a dependency for the Cairo GIR
* Add more tests for GI marshalling
* Update regression test suite
* Fix build on Windows for paths using '\' as a separator
* Support different prefix for finding GIR data
* Add GI_GIR_PATH environment variable for controlling GIR paths