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

[koalabot-rt]

This PR contains the following updates:

Package	Type	Update	Change
actions/cache	action	major	v5 → v6

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Release Notes

actions/cache (actions/cache)

v6.1.0

Compare Source

What's Changed

• Bump @​actions/cache to v6.1.0 - handle read-only cache access by @​jasongin in #​1768

Full Changelog: actions/cache@v6...v6.1.0

v6.0.0

Compare Source

What's Changed

• Update packages, migrate to ESM by @​Samirat in #​1760

Full Changelog: actions/cache@v5...v6.0.0

v6

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Coverage Report

File	Stmts	Miss	Cover	Missing
src/tlacuilo/printer
buffer.py	29	1	97%	17
print.py	36	15	58%	16, 18, 48–59, 70–76
schema.py	43	1	98%	81
TOTAL	207	17	92%

Tests	Skipped	Failures	Errors	Time
24	0 💤	0 ❌	0 🔥	0.285s ⏱️