www/opengist: Update to 1.15.2
Changes since 1.15.1:
v1.15.2
Added
- Anonymous LDAP user search (#794).
Fixed
- Prevent writes through symbolic links in gists (#799).
- Prevent server crashes when rendering empty CSV files.
- Invalid header handling in Git cat-file batch reader (#802).
- Overlapping headers in narrow embeds (#803).