Bisect_ppx 2.5.0

Additions

• Support Dune's --instrument-with integration, introduced in Dune 2.7.0 (#331, Pau Ruiz Safont).

Bugs fixed

• runtime.unix_open is not a function in js_of_ocaml integration, occurring since Dune 2.7.0 (#334).
• Don't assume that (&&) is always applied to two arguments (#333, reported Vladimir Keleshev).
• esy sandbox directory specified in environment variable cur__target_dir might not exist (#328, reported David Sancho).
• Reporter: don't crash on symlink cycles (#324, reported Rudi Grinberg).