libgit2-glib: update 0.26.4_2 bottle for Linuxbrew.
libgit2-glib: update 0.26.4_2 bottle for Linuxbrew.

rwhogg/homebrew-core,LinuxbrewTestBot/homebrew-core,Linuxbrew/homebrew-core,maxim-belkin/homebrew-core,rwhogg/homebrew-core,LinuxbrewTestBot/homebrew-core,maxim-belkin/homebrew-core,Linuxbrew/homebrew-core