Privoxy 3.0.31-X has the experimental https inspection feature enabled
which allows filtering https traffic.  Configure the directives in
section 7 of the config file and then add the +https-inspection action.

Privoxy 3.0.31-X was built with
  pcre 8.44 library instead of the very old built-in pcre library
  mbed-tls 2.16.9 library
  brotli 1.0.9 library
  gcc options -fstack-protector-strong and -D_FORTIFY_SOURCE=2