chore(deps): bump gdk-pixbuf from 0.15.4 to 0.15.6

[dependabot[bot]]

Bumps gdk-pixbuf from 0.15.4 to 0.15.6.

Release notes

Sourced from gdk-pixbuf's releases.

0.15.6

Colin Walters (1):
      translate: Pre-allocate Rust hashmap at correct size
Hofer-Julian (1):
glib: add trait StaticTypeExt with method type_ensure
Jason Francis (1):
glib-macros: Pass a pointer for watched objects into closure macro
Sebastian Dröge (14):
Update versions to 0.15.5
Handle empty slices correctly
Update gir-files
glib: Mark UnicodeScript::Math as available in 2.72
gio: Implement File::move_async manually
glib: Ignore aligned allocation functions
glib: Fix handling of closures that provide a return value pointer that is initialized to G_TYPE_INVALID
glib: Add an Object specific value type checker
glib: Don't use from_glib_full() for the individual items of an array for boxed inline types
Regenerate
Update versions to 0.15.6
arcnmx (6):
glib: Variant::from_dict_entry
glib: VariantType::new_dict_entry
glib: VariantType::new_array
glib: VariantType::new_maybe
glib: VariantType::new_tuple
glib: impl AsRef<Variant> for Variant
songww (1):
Add missing pango attrs

0.15.5

Matteo Biggio (1):
      gtask: fix memory leak in when calling g_task_return_value
Sebastian Dröge (5):
Update gir-files
Regenerate with latest gir-files
gio: Add version to CredentialsType::Win32Pid
Update versions to 0.15.5
arcnmx (8):
glib: Pointer type
glib: give a name to c_void
</tr></table>

... (truncated)

Commits

• 333045f Update versions to 0.15.6
• 1e230dd Merge pull request #570 from sdroege/0.15-backports
• d4f17e4 glib: impl AsRef<Variant> for Variant
• 09c999a glib: VariantType::new_tuple
• bac4bb7 glib: VariantType::new_maybe
• bbfa83b glib: VariantType::new_array
• 07b37d3 glib: VariantType::new_dict_entry
• 280f31d glib: Variant::from_dict_entry
• ce140d7 Merge pull request #566 from sdroege/0.15-backports
• cfd454f glib-macros: Pass a pointer for watched objects into closure macro
• Additional commits viewable in compare view

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