Fix RST rendering hanging on large files
To render ReStructuredText files, the gitlab-markup gem spawns a python3
process via Popen.open3. If the stdout buffer exceeded the maximum
size, the pipe would be filled, causing a 60-second timeout on the
backend.
This version bump brings in the change in gitlab-markup!23 (merged)
Relates to #13244 (closed)
Edited by Stan Hu