build(deps): bump gio from 0.18.0 to 0.18.4

[dependabot]

Bumps gio from 0.18.0 to 0.18.4.

Release notes

Sourced from gio's releases.

0.18.4

Guillaume Gomez :
      Fix new clippy lints
Sebastian Dröge:
glib: Deprecate main context channel
gio: Don't wrongly cast DataInputStream byte arrays to a const pointer
Update versions to 0.18.4
Zander Brown:
gio: return NULL from spawn_blocking's underlying gtask

0.18.3

Aaron Erhardt:
      glib-macros: Mark property getters as #[must_use]
Bilal Elmoussaoui:
Fix nightly clippy warnings
Brian Vincent:
fix glyph string analysis methods that don't need &mut
Colin Walters:
glib/GStringPtr: Add as_str() and Deref<Target=&str>
Desuwa:
Add _full and _local_full methods for idle and timeout callbacks.
Eva Pace:
glib-macros: Remove unused imports from Properties doc test
Julian Hofer:
Add spawn_future and spawn_future_local convenience functions
Kévin Commaille:
gio: Use weak reference to ActionMap when adding action entries
Paolo Borelli:
gio: fix UnixSocketAddress constructor with a path
Sebastian Dröge:
Require a mutable reference for the glib::List mutable iterators
glib-macros: Update to proc-macro-crate 2
Switch to resolver = "2" for the workspace
Update gir / gir-files to latest 0.18 barnch
Regenerate with latest gir / gir-files
Update versions to 0.18.3
</tr></table>

... (truncated)

Commits

• c245700 Update versions to 0.18.4
• a44ab02 Merge pull request #1240 from sdroege/0.18-backports
• eba8f9d gio: return NULL from spawn_blocking's underlying gtask
• 5e14a8d gio: Don't wrongly cast DataInputStream byte arrays to a const pointer
• a7af9c0 Fix new clippy lints
• 93f6a02 Merge pull request #1231 from sdroege/0.18-deprecate-main-context-channel
• 9a8b40f glib: Deprecate main context channel
• e6192fe Update versions to 0.18.3
• 61dffa9 Merge pull request #1217 from sdroege/0.18-backports
• 578ec44 Regenerate with latest gir / gir-files
• Additional commits viewable in compare view

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