Update dependency libwebp to v1.6.0 (#2486)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

app/src/main/cpp/CMakeLists.txt

@@ -108,7 +108,7 @@ include_directories(${libarchive_SOURCE_DIR}/libarchive)
 FetchContent_Declare(
         libwebp
         GIT_REPOSITORY https://github.com/webmproject/libwebp.git
-        GIT_TAG v1.5.0
+        GIT_TAG v1.6.0
         GIT_SHALLOW 1
 )