Fabian Boehm ff800c68e8 tests: Increase one more timeout
Example output from a Cirrus bionic-asan-clang run:

```
fish: Unknown command: man
/tmp/cirrus-ci-build/share/functions/__fish_man_page.fish (line 30):
        if man "$maincmd" &>/dev/null
           ^~^
in function '__fish_man_page'
�

[I] prompt 9>echo TEXT
[I] prompt 9>echo TEXThrAi
[I] prompt 9>echo TEXThrAi
TEXThrAi
```

Yes, this detected escape, waiting *300ms* and then "h" as being below
the escape timeout of 120ms.
2022-12-23 12:18:20 +01:00
..
2022-12-22 17:34:10 +01:00
2022-12-23 12:18:20 +01:00
2021-08-30 17:16:19 +02:00