mix.exs: update fast_sanitize to 0.2.0

9 jobs for feat/floki-fast-html-2 in 5 minutes and 19 seconds (queued for 2 seconds)
Name Stage Failure
failed
build Build
==> pleroma
** (Mix) Could not compile with "make" (exit status: 2).
You need to have gcc and make installed. If you are using
Ubuntu or any other Debian-based system, install the packages
"build-essential". Also install "erlang-dev" package if not
included in your Erlang/OTP version. If you're on Fedora, run
"dnf group install 'Development Tools'".

ERROR: Job failed: exit code 1