Update dependency de.undercouch.download to v5.6.0 (#3096)

Author: solrbot

gradle/libs.versions.toml

@@ -196,7 +196,7 @@ tdunning-tdigest = "3.3"
 thetaphi-forbiddenapis = "3.9"
 thisptr-jacksonjq = "0.0.13"
 threeten-bp = "1.6.8"
-undercouch-download = "5.5.0"
+undercouch-download = "5.6.0"
 xerces = "2.12.2"
 xerial-snappy = "1.1.10.8"