Upgrade CI to maintain itself thus unbreak CI

[Jacalz]

This adds in the changes that we have in most other repos as well. Things should update themselves, builds are cached for faster speed and Staticcheck supports Go 1.24 cleanly. Don't run benchmarks as part of test either.

[coveralls]

Pull Request Test Coverage Report for Build 14385521320

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.04%) to 42.238%

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Files with Coverage Reduction	New Missed Lines	%
widget/calendar.go	2	90.0%

Totals
Change from base Build 12633287897:	-0.04%
Covered Lines:	1940
Relevant Lines:	4593

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💛 - Coveralls

[andydotxyz]

Thanks