ci: Clean the cache regularly to test on new compiler snapshots #1691

1. 
   real-or-random commented at 7:02 am on June 20, 2025: contributor

   We can use a GHA cron job to delete the cache every few weeks automatically.

   Originally posted by @real-or-random in #1690 (comment)

2. real-or-random added the label ci on Jun 20, 2025
3. 8144225309 referenced this in commit 895bda6b73 on Jan 23, 2026
4. 8144225309 referenced this in commit d47dfbea59 on Jan 25, 2026
5. 8144225309 referenced this in commit 8cf687beb4 on Jan 25, 2026
6. 8144225309 referenced this in commit fcb90a033b on Jan 25, 2026
7. 8144225309 referenced this in commit a27ae1ac83 on Jan 27, 2026
8. 8144225309 referenced this in commit dcf65f85cb on Jan 27, 2026
9. real-or-random closed this on Feb 2, 2026

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10. fanquake referenced this in commit 453949ab2a on Feb 2, 2026

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