[tor-qa] Tor Browser 10.5.6 is ready for testing

[Matthew Finkel]

Hello!

We are happy to announce the first Tor Browser 10.5.6 release candidate
for wider testing. Packages can be found at:

https://people.torproject.org/~sysrqb/builds/10.5.6-build2/

Tor Browser 10.5.6 updates Firefox to 78.14.0esr.

The full changelog since Tor Browser 10.5.5 is:
 * Windows + OS X + Linux
   * Update Openssl to 1.1.1l
   * Update Firefox to 78.14.0esr
 * Build System
   * OS X
     * Bug 40358: Make OpenSSL 1.1.1l buildable for macOS [tor-browser-build]