Update blacklight to version 7.8.0 (#121)

Co-authored-by: depfu[bot] <23717796+depfu[bot]@users.noreply.github.com>

Author: depfu[bot]

warclight.gemspec

@@ -21,7 +21,7 @@ Gem::Specification.new do |s|
   s.executables     = s.files.grep(%r{^exe/}) { |f| File.basename(f) }
   s.require_paths   = ['lib']
 
-  s.add_dependency 'blacklight', '7.7.0'
+  s.add_dependency 'blacklight', '7.8.0'
   s.add_dependency 'blacklight_range_limit', '7.8.0'
   s.add_dependency 'rails', '~> 5.0'
   s.add_dependency 'sprockets', '< 4.0'