Update hugo version to latest release

Author: ductape

.travis.yml

@@ -1,6 +1,6 @@
 language: python
 python:
-  - '3.6'
+  - "3.6"
 # Handle git submodules yourself
 git:
   submodules: false
@@ -9,7 +9,7 @@ before_install:
   - sed -i 's/git@github.com:/https:\/\/github.com\//' .gitmodules
   - git submodule update --init --recursive
 install:
-  - wget https://github.com/gohugoio/hugo/releases/download/v0.35/hugo_0.35_Linux-64bit.deb -O /tmp/hugo.deb && sudo dpkg -i /tmp/hugo.deb
+  - wget https://github.com/gohugoio/hugo/releases/download/v0.58.3/hugo_0.58.3_Linux-64bit.deb -O /tmp/hugo.deb && sudo dpkg -i /tmp/hugo.deb
   - pip install Pygments
   - rm -rf public 2> /dev/null
 script: