Update gitlab-workhorse to 8.31.2

Signed-off-by: solidnerd <[email protected]>

Author: solidnerd

Dockerfile

@@ -6,7 +6,7 @@ ENV GITLAB_VERSION=${VERSION} \
     RUBY_VERSION=2.6 \
     GOLANG_VERSION=1.13.10 \
     GITLAB_SHELL_VERSION=13.2.0 \
-    GITLAB_WORKHORSE_VERSION=8.31.1 \
+    GITLAB_WORKHORSE_VERSION=8.31.2 \
     GITLAB_PAGES_VERSION=1.18.0 \
     GITALY_SERVER_VERSION=13.0.5 \
     GITLAB_USER="git" \