[gnome-boxes] flatpak: Update to libvirt 8.4.0

[Felipe Borges <felipeborges src gnome org>]

commit eddb214f1c347916c9c4615c7b35db3999884a47
Author: Felipe Borges <felipeborges gnome org>
Date:   Thu Jul 7 14:30:22 2022 +0200

    flatpak: Update to libvirt 8.4.0

 build-aux/flatpak/org.gnome.BoxesDevel.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/build-aux/flatpak/org.gnome.BoxesDevel.json b/build-aux/flatpak/org.gnome.BoxesDevel.json
index dc09913b..8465a5e0 100644
--- a/build-aux/flatpak/org.gnome.BoxesDevel.json
+++ b/build-aux/flatpak/org.gnome.BoxesDevel.json
@@ -147,8 +147,8 @@
                     "sources": [
                         {
                             "type": "archive",
-                            "url": "https://libvirt.org/sources/libvirt-7.7.0.tar.xz";,
-                            "sha256": "1b616099c18d14b9424a622f2a0bd3e0cfa286414f3416bd1a8173621b2252b2"
+                            "url": "https://libvirt.org/sources/libvirt-8.4.0.tar.xz";,
+                            "sha256": "601a6e9bb03a43d05659f63e4a403df253ab0975b4a973f10a5607f3bbc018dd"
                         },
                         {
                             "type": "patch",