Update dependency libavif to v1.4.2 (#9652)

Co-authored-by: Andrew Murray <radarhere@users.noreply.github.com>

Author: renovate[bot]

.github/dependencies.json

@@ -6,7 +6,7 @@
   "harfbuzz": "14.2.0",
   "jpegturbo": "3.1.4.1",
   "lcms2": "2.19.1",
-  "libavif": "1.4.1",
+  "libavif": "1.4.2",
   "libimagequant": "4.4.1",
   "libpng": "1.6.58",
   "libwebp": "1.6.0",

depends/install_libavif.sh

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -eo pipefail
 
-version=1.4.1
+version=1.4.2
 
 if [[ "$GHA_LIBAVIF_CACHE_HIT" == "true" ]]; then