ccache: relax cache sloppiness for time macros

Description

time_macros: Ignore DATE, TIME and TIMESTAMP being present in the source code.

https://ccache.dev/manual/4.12.2.html

Issue(s)

https://gitlab.e.foundation/e/os/backlog/-/issues/4003

Test environment

Test procedures

Technical details

Screenshots

Check list

• Self review
• Test procedure explained
• Tested on fresh install
• Tested applied as an update
• License
• Internal documentation
• User documentation