chore(deps): update actions/checkout action to v6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	major	v5 -> v6

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Release Notes

actions/checkout (actions/checkout)

v6

Compare Source

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[github-actions]

Coverage Report

File	Stmts	Miss	Cover
tools/config
fastapi.py	2	0	100%
settings.py	20	0	100%
tools/logger
color.py	12	0	100%
googlecloud.py	6	0	100%
local.py	12	0	100%
logger.py	23	0	100%
style.py	7	0	100%
type.py	5	0	100%
tools/tracer
timer.py	16	0	100%
TOTAL	103	0	100%

Tests	Skipped	Failures	Errors	Time
8	0 💤	0 ❌	0 🔥	1.331s ⏱️