Merge branch 'sh-update-ruby-2.7.5' into 'master'

Update to Ruby 2.7.5

See merge request gitlab-org/gitlab-build-images!462

Dockerfile.danger

@@ -1,4 +1,4 @@
-FROM ruby:2.7.4-buster
+FROM ruby:2.7.5-buster
 MAINTAINER GitLab Quality Team
 
 # Danger manipulates git diff output. When a unicode char is present in the diff, it chokes with

scripts/custom-docker-build

@@ -215,8 +215,8 @@ function print_ruby_args() {
             ;;
 
         2.7|2.7.patched)
-            RUBY_VERSION="2.7.4"
-            RUBY_DOWNLOAD_SHA256="3043099089608859fc8cce7f9fdccaa1f53a462457e3838ec3b25a7d609fbc5b"
+            RUBY_VERSION="2.7.5"
+            RUBY_DOWNLOAD_SHA256="2755b900a21235b443bb16dadd9032f784d4a88f143d852bc5d154f22b8781f1"
             ;;
 
         # Please update any clients still asking for these images to request `ruby-2.7` instead,