Update git submodules
- Update extensions/CirrusSearch from branch 'wmf/1.34.0-wmf.8' to rECIR886c684964d1
- RequestLogger.php - ensure cirrussearch-request event namespaces array is an array
Change-Id: I3322c1abd9683224eea3c9ff6ba44fd2ac24c4fa
- RequestLogger.php - ensure cirrussearch-request event namespaces array is an array