Merge pull request #45 from reviewdog/depup/reviewdog

chore(deps): update reviewdog to 0.20.2

Author: haya14busa

Dockerfile

@@ -6,7 +6,7 @@ RUN apk --no-cache --update add git \
     && rm -rf /var/cache/apk/*
 
 # install reviewdog
-ENV REVIEWDOG_VERSION=v0.20.1
+ENV REVIEWDOG_VERSION=v0.20.2
 RUN wget -O - -q https://raw.githubusercontent.com/reviewdog/reviewdog/master/install.sh | sh -s -- -b /usr/local/bin/ ${REVIEWDOG_VERSION}
 
 # install cpplint