Pin bridges.torproject.org domains to Let's Encrypt's root cert public key
As discussed in tpo/tpa/team#41123 (comment 2896442) and above.
See also some pinning for other torproject.org domains which Firefox already appears to do.
As discussed in tpo/tpa/team#41123 (comment 2896442) and above.
See also some pinning for other torproject.org domains which Firefox already appears to do.