Update Hugo to version 0.70.0

Dockerfile

@@ -9,9 +9,9 @@
 # to work around segmentation fault issues.
 FROM golang:1.13-alpine
 ARG HUGO=hugo
-ARG HUGO_VERSION=0.69.2
-ARG HUGO_SHA=167d8fb2db1728c0b24914030bab498e38d8ae1dcb01f792672b8a0085903ddf
-ARG HUGO_EXTENDED_SHA=98e29a3f721c425c304ba97c6486d0daaadd20c4fc1779c72260f6a05a75b22e
+ARG HUGO_VERSION=0.70.0
+ARG HUGO_SHA=d0e2e1f8d2f69c1b378e34daaf9f91997cf777d3151da4d8aa6bd7b5703f9446
+ARG HUGO_EXTENDED_SHA=494fdb1c95675f9477d0279343a067a17b340a7d3c104f285bd745790e3bfc72
 RUN set -eux && \
     case ${HUGO} in \
       *_extended) \