Merge pull request #1629 from vim-jp/depup/reviewdog/reviewdog

chore(deps): update reviewdog/reviewdog to 0.20.1

Author: k-takata

.github/actions/vimhelp-nvcheck/Dockerfile

@@ -1,6 +1,6 @@
 FROM golang:1.18.5-alpine3.16
 
-ENV REVIEWDOG_VERSION=v0.20.0
+ENV REVIEWDOG_VERSION=v0.20.1
 
 # hadolint ignore=DL3006
 RUN apk --no-cache add git