Update git submodules
- Update extensions/Nuke from branch 'REL1_39' to 0d17af31761445dee241beee9e8d359047bb28fb
- Merge "build: Update MediaWiki requirement to 1.39.0" into REL1_39
- build: Update MediaWiki requirement to 1.39.0
Change-Id: Ie852f4d4c8893c7112dd2de8db71da431dabb6fa