Update Hugo to version 0.58.1

Dockerfile

@@ -9,9 +9,9 @@
 # to work around segmentation fault issues.
 FROM golang:1.12-alpine
 ARG HUGO=hugo
-ARG HUGO_VERSION=0.58.0
-ARG HUGO_SHA=073f692b7523d5bdf415273d4b8b26f5c230b57c36fe719368e7027368b9c5b7
-ARG HUGO_EXTENDED_SHA=0db2ffec032f52deada3415317d965b4acd11000c19a10248c107ee1e1fb671d
+ARG HUGO_VERSION=0.58.1
+ARG HUGO_SHA=55392f0a3382aa0e5e86358da8757eed60733deea67b681afb679028299e3927
+ARG HUGO_EXTENDED_SHA=85da8bf54ca6129f1d5f9d31c0dd2e8afae379120573dfa76741f94311c70ea2
 RUN set -eux && \
     case ${HUGO} in \
       *_extended) \