Change default value of DefaultCommandExecutionTimeout to match docs

[zeripath]

Set the default git timeout to 360s as per the docs not 60s.

Fix #10575

[codecov-io]

Codecov Report

Merging #10581 into master will decrease coverage by 0.01%.
The diff coverage is 47.05%.

@@            Coverage Diff             @@
##           master   #10581      +/-   ##
==========================================
- Coverage   43.72%   43.71%   -0.02%     
==========================================
  Files         585      585              
  Lines       82014    82005       -9     
==========================================
- Hits        35864    35849      -15     
- Misses      41711    41716       +5     
- Partials     4439     4440       +1

Impacted Files	Coverage Δ
routers/api/v1/repo/pull.go	34.63% <0%> (ø)	⬆️
services/pull/pull.go	35.88% <0%> (-0.19%)	⬇️
services/pull/review.go	0% <0%> (ø)	⬆️
routers/repo/issue.go	38% <0%> (ø)	⬆️
models/pull_sign.go	34.86% <0%> (ø)	⬆️
services/pull/temp_repo.go	29.05% <0%> (ø)	⬆️
routers/repo/pull.go	29.05% <40%> (+0.44%)	⬆️
modules/convert/pull.go	72.17% <57.14%> (+1.09%)	⬆️
services/pull/merge.go	49.34% <8.33%> (-0.12%)	⬇️
models/pull.go	43.33% <81.57%> (+0.96%)	⬆️
... and 11 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 73d1937...af7db43. Read the comment docs.