fix: remove slow Kaniko snapshot-mode=redo and compressed-caching flags

These flags caused build time regression from ~2:48 to 6:30.
snapshot-mode=redo does full filesystem walks per layer (slowest mode).
Default time-based mode is much faster for CI builds.

.gitlab-ci.yml

@@ -58,6 +58,4 @@ docker-build:
         --build-arg "VITE_APP_VERSION=$VERSION" \
         --cache=true \
         --cache-repo="$IMAGE_NAME/cache" \
-        --snapshot-mode=redo \
-        --compressed-caching=false \
         $DESTINATIONS