Add .git to BearSSL repo reference (#5827)
Add .git to BearSSL repo reference (#5827)

The BearSSL submodule reference is missing the .git extension on the
URL.  Add it, to match the rest of the repos.
esp8266/Arduino,sticilface/Arduino,Lan-Hekary/Arduino,esp8266/Arduino,Lan-Hekary/Arduino,esp8266/Arduino,esp8266/Arduino,sticilface/Arduino,sticilface/Arduino,sticilface/Arduino,Lan-Hekary/Arduino,Lan-Hekary/Arduino,Lan-Hekary/Arduino,sticilface/Arduino,esp8266/Arduino