test: bump test-run to new version

Bump test-run to new version with the following improvements:

- Bump luatest to 1.0.1-14-gdfee2f3 [1]
- Adjust test result report width to terminal size [2]
- dispatcher: lift pipe buffer size restriction [3]
- flake8: fix E721 do not compare types [4]

[1] tarantool/test-run@84ebae5
[2] tarantool/test-run@1724211
[3] tarantool/test-run@81259c4
[4] tarantool/test-run@1037299

We also have to fix several tests that check that script with luatest
assertions have empty stderr output. test-run brings Luatest which
logs assertions at 'info' level.

Note that gh_8433_raft_is_candidate_test is different. Original
assertion involves logging huge tables that have somewhere closed
sockets inside. And 'socket.__tostring' currently raises error for
closed sockets.

NO_DOC=submodule bump
NO_TEST=submodule bump
NO_CHANGELOG=submodule bump

(cherry picked from commit 97a801e1)