fix(cli/bench): strace numeric format

[marcosc90]

strace number format depends on LC_NUMERIC environment variable. This PR sets LC_NUMERIC to C to prevent strace from using decimal comma which causes the following line to panic:

deno/test_util/src/lib.rs

Line 2219 in f3dd137

percent_time: str::parse::<f64>(syscall_fields[0]).unwrap(),

To reproduce (on linux)

LC_NUMERIC=es_ES.UTF-8 cargo bench --bench deno_bench -- strace

---

Output can be tested by doing:

LC_NUMERIC=es_ES.UTF-8 strace -c -f -o /tmp/strace.out echo "deno"

% time     seconds  usecs/call     calls    errors syscall
------ ----------- ----------- --------- --------- ----------------
  0,00    0,000000           0         1           read
  0,00    0,000000           0         1           write
------ ----------- ----------- --------- --------- ----------------
100.00    0,000000                    39         2 total

---

LC_NUMERIC=C strace -c -f -o /tmp/strace.out echo "deno"

% time     seconds  usecs/call     calls    errors syscall
------ ----------- ----------- --------- --------- ----------------
  0.00    0.000000           0         3           read
  0.00    0.000000           0         1           write
------ ----------- ----------- --------- --------- ----------------
100.00    0.000000                    45         3 total

fixes #15743

https://github.com/denoland/deno/actions/runs/3134121413/jobs/5088284253

[littledivy]

Oh, good catch! LGTM

[bartlomieju]

LGTM too, thanks for fixing this @marcosc90!