Update dependency lychee to v0.20.1

Author: renovate[bot]

mise.toml

@@ -3,7 +3,7 @@
 "go:github.com/gohugoio/hugo" = "v0.148.2"
 "go:github.com/grafana/oats" = "0.4.0"
 java = "temurin-21.0.8+9.0.LTS"
-lychee = "0.20.0"
+lychee = "0.20.1"
 protoc = "32.0"
 
 [tasks.ci]