build: bump layer size check

Author: florentinl

scripts/check_layer_size.sh

@@ -8,7 +8,7 @@
 # Compares layer size to threshold, and fails if below that threshold
 
 set -e
-MAX_LAYER_COMPRESSED_SIZE_KB=$(expr 5 \* 1024)
+MAX_LAYER_COMPRESSED_SIZE_KB=$(expr 6 \* 1024)
 MAX_LAYER_UNCOMPRESSED_SIZE_KB=$(expr 13 \* 1024)