Update git submodules
- Update extensions/InputBox from branch 'REL1_39' to bda309c60931c1d5fab2d5671d6b5c23898ad2b4
- Merge "build: Update MediaWiki requirement to 1.39.0" into REL1_39
- build: Update MediaWiki requirement to 1.39.0
Change-Id: I8c01a0304602776ea1b7da01e6abb2417818fae7